The way the ZEV mandate works is that, by 2030, manufacturers will be obliged to exceed 80% EV sales. So, although theoretically Sunak’s gimmick could have extended the period when you could buy a new petrol or diesel, the industry would have switched already, because who wants to keep selling two competing types of car. And, of course, people will go on selling secondhand petrol and diesel cars for as long as they are roadworthy and you can find a filling station.