I think it may take decades before cars are 100% autonomous in all situations. But if the AI can handle almost everything, it could take over and let the humans

I think it may take decades before cars are 100% autonomous in all situations. But if the AI can handle almost everything, it could take over and let the humans read a book, and alert them in the rare case their input is needed. Fleets of autonomous taxis and trucks could have remote controlled operators monitoring them.