Personally I'd be satisfied with just being able to hand the highway driving over to the car. Keep me in the middle of the lane, don't let me hit another car or any object in the road, and sound a chime when I'm a mile from the exit.
If AI dodges the debris 99/100 the whole world will claim it as a failure because that 1 miss ended in someone's death - even if human drivers are only able to dodge 90/100.
The car manufacturers are afraid of being made responsible for that deaths, even when you could prove a human would not have been smarter.
Seems a much simpler problem to solve than full self driving everywhere!