On the other hand, the suburbs don't have much that is even comparable to city taxis in price or availability today, so maybe if it existed that price point would indeed do just as well away from cities too.
Most US cities aren't dense at all. A lot of them were built with transportation in mind. London and European cities in general are so much older that their city centers have no real way to accommodate that.
So what do you do? You provide non car options. Technically they exist in US cities too, but especially on the west coast they're just not a viable alternative. Nobody who can choose will take a 2 hour public transit trip over a 20 minute drive. Heck, in a lot of cases biking might be faster than your transit option, albeit riskier
It obviously take decades not years, but again Tesla full self driving was promissed back in 2016 and something tells me it would be a big success if it will be deployed on scale in 2036.
Couldn't be more different in the big European cities, using a car there is (made) cumbersome.
I live in Portland. Traffic is often quite slow. And even then it is much faster than public transit unless your destination is just a few miles away and on the same line.