Literally last week it was being discussed that Waymo now offers full self driving in SF right now. Unless I’m missing something, the future you’re saying is akin to fusion has just happened.
It rains in SF and there’s even fog… The fog’s name is Karl by the way. It’s also an old coastal city that doesn’t have a sane layout that you might expect from a test area like Arizona. SF is not an easy challenge and there are plenty of self-driving startups that have tried there and failed.
It hasn't rained regularly for years. We're in a bad drought, or as some other people put it, a new normal of very little rainfall.
I have no idea why people minimize level 4 self driving. It would absolutely be enough for most people in those geofenced areas/cities to no longer need a car, would massively drive down drunk-driving deaths, and would be a huge benefit for the blind, the elderly, the rural poor, children, etc.