You are absolutely right, and the only negative is the utopian-esque description, therefore it'll never quite work as well as it should - but I think aiming for that will still get something better than what we've got.

Your comment just made me think about the whole self-driving car thing as an extension of the car-centric thinking of the US (and how car-centricity is essentially anti-social, but that's beside the point), and now even the US is losing the car race to China, but it will maintain it's car-centric philosophy based on momentum rather than practicality. Could public transport be a national security priority? (mostly tongue in cheek, but just a smidge not).

Yea, it is an extension. It's additive. The safest car is the one that's parked. Car-centric culture has a lot of negative externalities. But the entire society is geared toward cars and propping them up. Cars themselves, auto jobs, departments of highways, tires, oil, gas, insurance, fast food, COSTCO, you name it. Most of those things can be replaced with something as simple as a sidewalk and better urban planning. If your goal is to prop up an industry, self-driving cars will do that for you.

If your goal is to increase autonomy [1], wealth, entrepreneurship, and happiness and decrease death and health concerns, racism, obesity, and other things you need to move away from car-only building and design patterns. I also think busses are a problem because they just reinforce bad habits. For most municipalities a bus is just a worse version of your car which is why they're largely unsuccessful for the masses. Bike/walk/rail is, in my view, quite literally the only good path forward for future transportation development.

I don't think the US is losing the car race to China though. What race? Why are we even in a race all of a sudden? I drive an EV and like them but aside from emissions I'm not sure one is really all that better than another (I find EVs more convenient though).

[1] Been a bad person lately? Maybe the government and the vehicle facial recognition technology says sorry no driving for you. Now what? Secondarily for the elderly (as the single-issue voter OP has mentioned) walking/biking/rail allows for better outcomes and for folks to participate more in daily life. Driving becomes more and more hazardous as we age and folks wind up stuck at home.