One of the things that might hasten the demise of the ICE vehicles, will be the gradual shrinkage of the fuelling opportunities, and corresponding increase in price. Just as, at the dawn of motoring, a motorist would have to purchase "motor spirit" from his local chemist, I imagine forecourts will be increasingly turned over to fast chargers and fewer petrol pumps will be available. All gradual, of course. I still expect there to be a fair number of ICE vehicles around when I'm dead...