We have automated subway where I live, and while they're nice and modern, I understand why people would want the privacy and comfort of a personal car. That's one of the points that isn't mentionned in your joke.
Another is that you could have your car use its AI in the special roads in the city and highways, and the rest of the time drive yourself, where AI is harder to implement. A bit like some hybrid cars where you can do most of the day to day commute on electricity, but for longer road trips you can use gas.
Another is that you could have your car use its AI in the special roads in the city and highways, and the rest of the time drive yourself, where AI is harder to implement. A bit like some hybrid cars where you can do most of the day to day commute on electricity, but for longer road trips you can use gas.