Category Archives: Electric Vehicles

I shook Elon Musk warmly by the hand…

 

I shook Elon Musk warmly by the hand and told him I had enjoyed his talk about rockets.  That was more than twenty years ago, when we were both speaking at the same event. (Doesn’t that sound impressive?)  He was talking about future space tourism.  I was talking about creating IT for the developing world. (Doesn’t that sound virtuous?)

I would, of course, completely refuse to shake his hand now.  That’s partly because of, and partly despite, what’s happened since.

Alongside his discussion of space exploration — of which, as a broad generalisation, I am a fan — he also mentioned he was investing in a company that produced electric cars.  He was suggesting that they might one day actually be a really viable alternative to petrol-powered ones, although at the time the likelihood of my ever affording such a vehicle seemed roughly the same as my ever going in one of his rockets.

And yet, only a decade or so after that event, we bought our first electric car to replace our diesel Golf, and have never looked back.  And a little over four years ago, by shaking our piggy-bank very hard, we bought one of his Tesla Model 3s, which not long afterwards became the best-selling car in Europe.  Note that I didn’t say the best selling EV… there have been several months where it was literally the best-selling of all cars.  Nowadays Tesla models still regularly hit the top-10 lists even now they have a lot more EV competition, and despite the key Tesla numbers now being split between the Model 3 and the newer and more popular Model Y.

So Elon Musk, in my eyes, built up a huge store of credit, because I believe he has single-handedly done more than any other living person to combat climate change.  That’s quite a bank balance.

Though he neither founded Tesla nor designed the cars himself, his perseverance, vision, and willingness to spend his cash where others weren’t, has dragged an entire industry, mostly kicking and screaming, into a far better place, both technologically and for the planet.  I remember the shock of traditional car dealers in 2016, trying hard to sell a few more cars at discounts to fill their next quarter’s quota, when it was announced that quarter of a million people had put down a deposit for the recently-announced Model 3: a car they had never even seen.   It took that kind of major eathquake to rattle the enormous global inertia of the fossil-burning world and to kick investment in battery-production up to a whole new level.   I won’t pretend Musk was doing all of this for purely selfless reasons, or that he did it entirely on his own, but many thousands of Greta Thunbergs combined could not dream of having such an impact.  He changed the world.

Now, it also soon became apparent that Musk wasn’t, let’s say, an entirely reliable figure!  It’s funny now, looking back, to think my main criticism of him used to be his inability to hit his unrealistic deadlines, and the number of his announced products that never saw the light of day at all.  There are drivers now on their third or fourth Tesla who still can’t get the ‘Full Self-Driving’ feature they paid for with their first!

But since then, it won’t have escaped your notice that almost every day’s news has included some new and bigger reason to doubt, dislike, ridicule or fear him, and even the significant amount of slack I was willing to cut him has long since been exhausted.

But here’s the thing.  My Tesla is still an annoyingly wonderful car.  

It’s not perfect, of course. I bought the Model 3 after having tested several other cars, knowing that it was really too big for European roads, and that it was pretty foolish to buy any car that doesn’t have a hatchback, especially if you regularly transport things like dogs and outboard motors.    There wasn’t a dealer close to me. And I knew that, say, the Polestar 2, a similar price at the time, was a more sensible shape and probably much better mechanically.  (It’s basically a Volvo, after all.)  

But I also knew that Teslas had by far the best software, the best battery-management, and the best charging network, all substantially as a result of the headstart his investment gave them.  I wasn’t buying just a car, I realised, I was buying into an ecosystem.  So far, I’ve never regretted that choice.

What I didn’t know at the time was that the car would continue to get better during my ownership, as a result of those regular software updates which arrive every month or two.  Here are a couple of examples:

1. Lights

When I bought it, I was sad that the Model 3 didn’t have those smart matrix headlights some other expensive cars were getting.  Certain Audis, for example, would dim the sections of the headlight beam that were pointing at oncoming cars, to stop them dazzling other drivers. Ah well, I thought.  You can’t have everything.  

And then, about three years later, a software update turned them on.

Eh? What? I didn’t even know I had the hardware; I thought they were ordinary headlights!  

But no, the possibility of individual LED control was built-in, and so after I had already clocked up more than 20,000 miles, the car got a new feature. For free. Which works really well. And it’s smarter than many other systems because it’s based on the computer’s model of surrounding vehicles, rather than just on the detection of headlights, so it will try to avoid blinding cars in front of you in the same lane too, whose drivers might otherwise be dazzled in the rear-view mirror. And I’ve seen it do the same for cyclists.

Many of the visible updates are small and incremental. But this was a really nice big present, and completely unexpected.

2. Brakes

Just before Christmas, I was reversing off a shop’s forecourt into a side-road.   I pulled out promptly, turning as I did so, because I needed to get into a gap in the traffic.  At the same time, a woman who had been pushing her bike along the pavement suddenly turned it out and crossed the road right behind me.  I had no way of knowing she would do that — I was already moving but she was looking the other way — and, though I wasn’t going very fast, it could have been a very bad morning for both of us. I’m pretty sure she would at least have gone to hospital with a broken leg.

But the car saw her, and reacted much quicker than I could, slamming on the brakes so hard that I thought I had hit something solid.  I worked out what had happened (and later verified it on the car’s automatic camera recordings).  Meanwhile, the cyclist walked merrily across and then cycled off, unaware of her really quite narrow escape.  Perhaps she was wearing headphones.

Only a few months ago, a software update introduced an enhancement to the emergency braking which tracks the trajectory of surrounding objects and pedestrians, and works out not just whether they are right in your path, but whether they will be when you get there. I suspect it was probably that which allowed her to walk away oblivious and unharmed.  But it wasn’t part of the car when I purchased it, and it didn’t cost me a penny.

So yes, I do love this car, and especially the associated ecosystem.  It cost us a lot of money, and it’s depreciated a significant amount since then, but it’s been completely reliable so far and the running costs have been very low.  For all of these reasons, I expect to keep it a long time.  

Which is good, because, since the US election, in which one member of our household voted, I don’t think I’ll be allowed to buy another Tesla in future unless something pretty drastic changes!

Hopefully we can keep this one long enough for some of the competition to catch up a bit more.   There’s now a really good choice of other vehicles, and their battery management is getting a great deal better.   Personally, I think the local Kia dealer would be my first point of call if I had to change.  But a lot of them are more expensive than Teslas now, and have neither the same charging capabilites nor such good and regular software updates.

Still, Elon set the bar high, and Tesla keeps providing the competitive stick driving much of the rest of the industry forward in the hope of those “Could this be a Tesla-beater?” reviews. So I have high hopes for the future.  

In the meantime, we feel a bit better from having one of these stickers in the window!

 

It’s hard not to like this story…

Regular readers will know that I like electrifying things.  Our car has been electric for nearly a decade now, and we also have a lawnmower, a strimmer, two hedge-trimmers, two bicycles and a range of other devices powered by batteries. We also generate most of our own electricity, and buy the rest overnight at cheap rates from renewable sources.  All very satisfying.

Perhaps my favourite such purchase, though, is our electric outboard motor, which makes powered boating as pleasant as sailing, and has provided us with no end of peaceful enjoyment.  

Larger boats, however, are a problem, when it comes to electrification.  

Though there are some bigger ships and even some car ferries powered by batteries, they tend not to cover very great distances.  Meanwhile, traditional shipping burns vast amounts of fuel, and typically very dirty fuel, because the big diesel engines can make use of far less refined oils than the stuff we use on land.  (And, ironically, something like 40% of all global shipping consists of the transport of fossil fuels themselves to other places that want to burn them!)

I can’t help wondering whether more shipping could be powered by nuclear reactors.  This is, of course, already used for submarines, primarily because nuclear reactors don’t depend on oxygen.  But suppose you want propulsion that doesn’t depend on carbon either?  Still, nuclear fission does have some challenges of its own.

So I think many people are hoping that the big cargo ships of the future will carry hydrogen tanks instead of diesel tanks, and that will be the eventual answer to how we make them cleaner, at least until we have mobile fusion reactors that can extract deuterium from the sea water en route

But there may be another important option, which comes not so much from the future, as from the past.

Last month, for the first time in nearly a century, a large cargo ship set off across the Atlantic powered almost entirely by sail.  (See this Fast Company post for the details.)  These are sailing ships for the modern age, taking advantage of carbon-fibre masts, meteorological forecasts tied to the routing software, and automations that allow them to be sailed by a very modest crew.  Winds are easier to predict than in the past, and spars and sails can be bigger while still being manageable.  TOWT, the French company behind the ships, has two in operation now, and six more on order.

I’ve no idea how significant a part of our future shipping needs could be met this way, but I really hope they can play a substantial part, because, quite apart from everything else, aren’t they beautiful?

The 'Anemos' under sail

Go, Octopus, Go!

One of the surprising things about Octopus, the UK company from whom we purchase our gas and electricity, is that, despite growing to the point where they handle about a quarter of UK households, they continue to innovate.

For a long time, we’ve been on the ‘Octopus Go’ tariff, which means that for the four hours starting from 00:30 each night, we get electricity at less than one-third of the cost of the rest of the day. We make good use of this, charging our home batteries to the point where, combined with our solar, we very seldom use any normal (i.e. peak-rate) power.

We also charge our car during this time, meaning that our ‘fuel’ costs are about 2p per mile, and one of my favourite statistics is that, since it cost me about £600 to replace our car tyres recently after 30,000 miles, we pay almost exactly the same per mile for fuel as we do for tyre rubber.

All of this may sound very impressive, green and economical… just don’t ask me how much I’ve spent to get to this point! Still, I find it very satisfying.

One of the purposes of this post, by the way, is to remind anyone else also on Octopus Go that, from today, the cheap period has been extended to five hours: from 00:30-05:30. So go and reprogram your cars, car chargers, home batteries or whatever now, before you forget! For those of us who have a standard 7kW home charger, that means 35kWh of cheap-rate power per day, which probably translates into about 100-150 miles, depending on your car.

But Octopus also have some interesting features aimed at balancing the load on the grid during times of peak supply or demand. They’ve tried a few variants, and the availability of any particular one will be rather dependent on your postcode, but here we do quite well, as a result, I think, of generating vast amounts of wind power off the East Anglian coast and not yet having all the cabling that’s needed to distribute it effectively to other parts of the country!

One of these schemes is called ‘Saving Sessions‘, where, at times of peak demand, you can get paid surprisingly high rates per kWh for using less than your normal amount of electricity. At first, I ignored this because we use so little daytime grid power anyway that I thought it would be pointless, until a friend pointed out that even if your usage is normally zero, you can be paid for negative usage; in other words, for exporting to the grid.

“Oh ho!”, thought I, “I can do that!” And so, after a bit of programming, my home automation system notices whenever a Saving Session is active and starts discharging my house battery (and any excess solar) to the grid. These sessions only happen in the winter, and not very frequently, but we still managed to export 40kWh between November and March, earning us about £100. Yes, they really do pay as much as £2.50/kWh for energy we might have bought the night before for 9p. On rare occasions even more.

And finally, there are Octopus Power-Ups. When they think supply is going to exceed demand, they need to absorb it, and so they will let you consume as much as you want for free. Since this is primarily down to the weather forecast predicting strong winds, or lots of sunshine, or both, you don’t get very much notice: typically an email the day before or even on the same day. I just plug the times into my system, and when the moment comes, my car starts charging, my batteries start charging, my hot water starts heating, and so on. It costs me nothing, Octopus probably make more money the more I use, and everyone is happy. (Except my envious friends who don’t live in one of the blessed postcodes!) The main challenge was that I had expended so much effort over many months trying to configure the house to draw as little as possible from the grid, and I now had to set all of the components to do precisely the opposite for a short time and then revert! Still, that’s what home automation is for!

Octopus is a large company now, and like all organisations on such a scale, does have plenty of problems too. They suddenly realised at one point in the past, for example, that they had been billing me for gas but not electricity for nearly a year, and I got a very large bill that month. Also, I had smart meters installed for both gas and electricity, and the gas one has never worked, so I still have to go and read it manually. To be fair, this is a technical problem suffered at a lot of UK households by most providers, who didn’t realise that providing the electricity meter with connectivity and assuming that the gas meter could relay its reports through it using Zigbee wasn’t going to work when, as is often the case, the meters are on opposite side of a brick or stone house filled with competing 2.4GHz signals!)

But, in general, I’m a happy customer, and I hope they continue to explore new and interesting ways to optimise supply and demand. Further innovations will, of course, require me to keep tweaking my code, but, hey, everyone needs a hobby!

My thanks to my pal Gareth Marlow, who has a similar set-up and whose Home Assistant configuration helped me make mine much better! Gareth has also done some great YouTube videos analysing the costs and savings resulting from his home solar/battery system; perhaps the best I’ve seen on that topic for UK enthusiasts. Recommended.

How to solve ‘range anxiety’

Rory Sutherland has a nice piece with this title in The Spectator.  Excerpt:

As you are reading this, thousands of the world’s cleverest people are spending billions to increase the range of electric car batteries. The reason for this is to reduce a phenomenon called ‘range anxiety’. I suggest that it might be a lot cheaper to reduce anxiety than it is to increase range.

The truth is there is no such thing as range anxiety…

I’ll let you read the rest.

This also reminds me that if you missed Geoff Greer’s review of a gasoline-powered car last year, do go on to read that afterwards!

Many thanks to Peter Robinson for the link to Rory’s piece.

Well, I finally folded…

I’ve wanted an e-bike for ages, ever since I first tried one many, many years ago, but most of my normal cycling destinations are close enough that I didn’t really feel I had an excuse to buy one.

But then we started to think that folding bikes would also be useful when campervanning, and so the idea started to grow of getting folding e-bikes… and we are now the proud owners of two Eovolt “Afternoon”s.

Interestingly, we just rode these and found we liked them slightly more than the others we tried, but when we got them home and started looking for reviews, accessories, etc found they seemed to have comparatively little presence online (at least, in the English-speaking world). I certainly hadn’t come across them on YouTube, for example, when researching possible brands. So here’s my modest attempt at rectifying that!

Electric car fire risks

The idea that electric cars are a serious fire risk is one that has established itself in people’s minds, chiefly because such headlines increase advertising revenue for newspaper editors.   If you can’t get a scare story with ‘Elon Musk’ in the title, at least try to include some reference to ‘Tesla’! When a big fire occurred in the car park at Luton airport recently, there were immediate reports suggesting it might have been started by an EV. This was pure speculation, and later, of course, when it turned out to have been a diesel, this wasn’t worthy of any headlines.

Yes, it is the case that EV batteries can catch fire due to thermal runaway, but this is also so rare that there has been very little data on the actual details.  So the Australia-based organisation EV FireSafe has been working to put together some proper statistics, by gathering as much information about EV fires around the world as they can, and their website is a great reference. They also train firefighters on how to deal with such incidents.

First a few basics:

  • All cars can catch fire, for a variety of reasons.  EVs are much less likely to do so than other vehicles, though to some degree this is because they are generally newer.
  • The difference between EVs and ICE vehicles is that, if the main traction battery is involved in the fire — which is certainly not always the case — the fire will be of a different sort, and generally much harder to extinguish, especially by fire crews who don’t yet have much experience of them.
  • It’s very rare that the battery or charging system is the independent cause of a vehicle fire.
  • EV batteries tend to burn very hot and for a long time.  They don’t tend to explode.
  • You can’t put out such fires with foam, and what you really want to do is just to cool everything down with lots and lots and lots of water. Some fire crews have been nervous about dangers of electrocution from pouring water onto high-voltage batteries, but the risks of this turn out to be exceedingly small and there have been no known incidents with any such problems.
  • A few past reports have been dramatically skewed by including e-bikes and e-scooters in a general report on ‘EVs’.  Bikes and scooters have a much higher risk: they are not subject to the same kinds of regulation, there are third-party and counterfeit batteries on the market, batteries are often used after they are dropped or damaged, and so on.  
  • Here we are only concerned with cars and other large EVs, and in fires involving the traction battery, which is the thing that distinguishes them from vehicles which carry, say, a tank of highly-flammable liquid instead.

So how common are these fires involving the battery itself?

Well, after gathering as much data as they can about such fires since 2010, they have identified about 400 incidents, from something like 40 million EVs on the road.   They acknowledge that the data is far from complete — they gather what they can from academic surveys, reports by firefighting organisations, and so on — but it’s also better than most other analyses. And it’s worth remembering that a lot of fires involving the battery are not caused by the battery – they’re caused by things like arson, or the car being in a building which caught fire and burned down around it, and so on.

In other words, the risk is tiny.  If you have an e-scooter charging in your garage, you should be more worried about that than the EV sitting on your drive.

If you’d like to know more about the subject, I recommend the Fully Charged podcast episode 244, which has an interview with Emma Sutcliffe of EV Firesafe – available from all good podcast apps, or on the Fully Charged website.

Middle-of-the-road conundrum

When I turn on my Tesla ‘Autopilot’, the car sits squarely in the middle of the lane, much more accurately than if I were driving it myself.

It occurred to me to wonder, as more people use these devices, what that might do to the wear and compression of the road surface?

Of course, cars aren’t all the same width, but they don’t differ too much, so perhaps over time we’ll end up running in little tracks; a kind of guided busway, where it’ll be harder to drift accidentally out of your lane even in the absence of electronic assistance.

Or perhaps car manufacturers will be required to introduce a a little randomised ‘drift’ into their algorithms to stop the roads having to be repaired so often?

Tweetback

For all its problems over the years, one thing that Twitter has always done quite well is to give you access to backups of your data. You can request a dump of your archive and (a day or two later) download a ZIP file containing all of your Tweets and lots of other data besides, which you could process with your own code, but can also view using an HTML page included in the archive.

As the future of Twitter gets ever more uncertain, I ask for backups more frequently! You might want to do the same… one day you may not be able to.

I had an account in the very early days, and then deleted it, before joining again a little while later. So the first tweet on my current account, just over 15 years ago, says:

Just re-established a Twitter account, with some trepidation

I didn’t have an iPhone back then – it existed, but I waited for the 3G version, which arrived a few months later. So quite a few of my early Tweets are about the fun things I could do with my iPod Touch, though I guess most of them would actually have been submitted using SMS text messaging, as you did back then.

I was also amused to see that one of my earliest messages was while barbecuing in the garden. I was recommending a local brand of sausage, which I can still recommend as one of my favourites: “Musk’s“.

That name, but attached to another owner, was to pop up on Twitter occasionally in the future.

I had actually met Elon Musk a couple of years before, but little did I know that his name would one day be so closely associated with this new social network. Back then, he was mostly known for PayPal and SpaceX, though he did have an intriguing side-interest in electric cars. It didn’t look likely that I (or most of my friends) would ever be able to afford one, though, so his other activities were of more interest.

These days, I still consume that fine brand of Newmarket sausages with the same frequency and enthusiasm as I did back then. Other things have changed, however. I drive an electric car every day, and have barely been in a petrol station for 7+ years. Twitter, on the other hand, I only look at a couple of times per week. Elon Musk is primarily responsible for both of those changes!

Zappi Days

When I installed my home solar system, I also replaced my perfectly-functional car charger with a new one: a Myenergi Zappi. Why?

The Zappi is a popular charger, designed in the UK, and rapidly finding favour in other parts of the world. Here, I talk about what it can do, things you might need to take into account if connecting to a car like the Tesla, and a little bit of magic geekery I set up to make it fit my needs even better.

(Direct Link)

Gasoline car review

A wonderful review by Geoff Greer compares one of these gasoline-powered cars to the experience of driving a normal electric one.

Here’s an excerpt:

Refueling was a mixed bag. Whenever I parked in my garage, I had to suppress the urge to plug the car in. Gasoline is only available at special stations, and it is prohibitively expensive to get a gasoline line installed in your home. So unlike a normal car, you don’t wake up every morning with full range. The only way to add range is to go to gas stations. These are similar to fast charging stations, but smelly and more dangerous.

I’ve been driving electric cars for over seven years now, so the very rare occasions when I visit a petrol station — a couple of months ago to buy some screen wash liquid, for example — definitely do remind me of what I’m (not) missing!

Anyway, do read the whole thing.  

Thanks to John for the link.

Morning, campers!

One of the great things about owning an EV — which, after seven years of electric driving, I tend to take for granted, until I get back in a dinosaur-fuelled vehicle — is the heating system.

Because it’s independent of the motor, you get heat more quickly as you drive off since you’re not waiting for big chunks of iron and radiators full of water to warm up in order to warm you.

More importantly, though, you can also run the heating (or cooling) without the rest of the car being switched on. Most EVs will allow you to turn it on remotely from an app, and if you do this five minutes before you want to set off, the car is always comfortable, and my old winter practice of pouring milk-bottles full of warm water over frozen windscreens before departure is becoming a distant memory!

In the Tesla, the climate control has various special ‘modes’.

The one we use all the time is “Dog Mode”, which keeps Tilly at a comfortable temperature whatever’s happening outside, disables the internal alarm sensors, and puts a picture of an animated dog up on the main display with a notice saying “My driver will be back soon! Don’t worry, I’m comfortable in here: the A/C’s on and it’s 20 degrees C.” This is to prevent people from breaking your windows to save the poor animal trapped inside on a hot day!

But recently I’ve been experimenting with another: “Camp Mode”. This is for people foolish enough to consider sleeping in their car, an activity made rather more pleasant by having your bedroom well-ventilated at exactly the temperature you want and without excessive condensation on the windows! But it’s still sleeping in the boot of your car. YouTube has no shortage of videos talking about how to do it and the expensive products you can buy to make it more comfortable.

So, for no better reason than that I have to try out all the functions on my gadgets, and it might prove more comfortable than my tent at this time of year, I’ve been giving it a go. More comfortable – yes. More spacious? Definitely not! (If you had a bigger and more expensive Tesla than mine, it would be a different experience.)

But, for your amusement, here’s my little camping video:

(Direct link)

One thing I neglect to mention is that just across the car park is a big building with nice loos and excellent showers. That makes a big difference!

I’ll be back there on Saturday night. You can envy or pity me as the mood takes you!

The dangers of a headline figure

If you believe my Twitter stream, there are a lot of people out there who think that the UK government has capped the energy bills so they can’t pay more than £2,500 this year. This is not at all true. But it’s been reinforced by the Prime Minister’s interviews on various radio stations this morning when she said things like “making sure that nobody is paying fuel bills of more than £2,500”. Either she doesn’t understand it, or she’s not very good at explaining things clearly.

The problem is that the media are so keen to feed people a single, simple number, that for weeks we’ve been hearing about what’s happening to the energy costs for the average household and referring to that as a capped number, when in fact, of course, it’s the price per kWh that’s been capped. (More info here.) If, say, you use twice as much as the average household, your bill could be £5000. Some not-very-smart people even think they can use as much as they like, because, hey, it’s been capped now, and they’re going to get a nasty surprise! And similarly, of course, if you use half as much, you can worry a bit less about that headline figure.

This desire to reduce things to one number causes problems in many situations. Remember when the only way most people had to assess the PC they wanted to buy was based on its CPU’s GHz? (Or MHz for those with longer memories?)

Now, the headline figure for every electric car is the number of miles it can do on a charge, when lots of other factors will affect how easy it is to use in reality, like how fast it charges, or its drag coefficient (which affects how its energy use varies with speed). For many people, long journeys are relatively rare, and the important question when embarking on one will actually be something like, “How fast will this be able to recharge at the type of chargers available about 150-200 miles from my house?” And even that question is much less important if the chargers happen to have a nice cafe or restaurant next to them!

The kind of gamification that reduces things to a simple score is always appealing. But whenever you see things being compared with just one number, remember Ben Goldacre’s warning: “I think you’ll find it’s a bit more complicated than that.”

© Copyright Quentin Stafford-Fraser