This is kind of weird. It's like saying "Driving in snow is impossible", well we know it is possible because humans do it.

And this even ignores all the things modern computer controlled vehicles do above and beyond humans as it is. Take most people used to driving modern cars and chunk them an old armstrong steering car and they'll put themselves into a ditch on a rainy day.

Really the last things in self driving cars is fast portable compute and general intelligence. General intelligence will be needed for the million edge cases we need while driving. The particular problem is once we get this general intelligence a lot of problems are going to disappear and bring up a whole new set of problems for people and society at large.

Ah we only need general intelligence, something so ineffable and hard to understand that we don't even have a clear definition of it.