As I keep saying ... (maybe no one is listening) .... we have gone from eating raw meat, roots, and insects, to walking on the freaking MOON .... Yes, there are a Lot of situations which will make advancing AI cars more complicated.
Do you think the first people who bought bicycles and realized how few roads there were just quit? No, they got roads built ... which is why cars suddenly became practical.
Seriously, how vast was the shift from riding on the backs of animals to traveling on independent motorized vehicles? When roads were often impassible for wagons, let alone cars?
People keep coming up with pebbles on the path and saying "Let's see you climb This mountain."
We Drove a Car On the Moon. So, obviously, there is no way to solve any technical problem with AI cars. Just cannot be done.