They know, you know. The data. It’s all there.

If you buy a new plug-in hybrid Citroën C5 X, it will ping head office every now and again to grass you up about how often you’ve plugged in the car – or haven’t. It’s all anonymised, they say, and GDPR-compliant. But Citroën CEO Vincent Cobée explains: “We know, based on 200 million kilometres of results, the fuel economy and what we need to influence the number of people charging.”

Your Citroën PHEV will send you reminders if don’t plug it in regularly. “The less often you charge it, the more often you get a reminder,” Cobée says.

Now, the car knows to do this even without sending data to head office. But data referencing the car’s VIN can, say, be sent to a fleet manager, who can deanonymise it and remind its driver in person to plug it in when they get home.

It’s my understanding that basically all new electrified vehicles are hooked up to the internet in this manner, and they all know precisely how much electricity has been put into them.

Which makes me wonder. As internal combustion dies out, something has to replace the billions in annual revenue that Fuel Duty on petrol and diesel gives the Treasury. One option is to tax people on where and when you drive – road pricing, as our MPs seem persuaded to be considering.

Charging

But why do that when modern cars’ connectivity means the government can directly tax automotive electricity and therefore reward efficient driving?

Road pricing gives people privacy worries and it opens the door for legislators to decide where and when you should be driving by making some roads and periods more expensive.