> I'm not so convinced that I'd prefer to live isolated and "just" get a robotaxi for every excursion anyone wants to do. I'd rather my kids walked about a quarter mile to school with several neighbors. Exercise and being outside are good!

I believe that robotaxis will enable totally new behaviors. For example, if you don't live immediately near a park, you won't often go there. It's just too tiresome to use public transit to visit a park just for a short walk/run/play. And personal cars are not available for children.

With robocars, you'll be able to text your friend: "hi, meet you at the park corner in 10", jump into a car, and arrive there. This will have zero friction, so it's far more likely to become a habitual behavior.

> Even assuming we turned smarter and built clean nuclear plants everywhere, just all the paving of roads, tires etc. takes a lot of resources.

Ha. One line of Manhattan subway now costs as much as 1500 miles of modern 6-lane freeway. Urban construction is EXPENSIVE.