Except that one of the big upsides of autocars is this demographic of people. And many (most) places in the US are not conveniently served by public transit. Heck, I live in one of the better places (Portland Oregon) and even in the core of the city it's going to be easily 2x as long to take PT anywhere vs a private car. IMO the big promise of autocars is the potential for eliminating mass transit along with all it's annoyances.