This is just learned helplessness. The US already spends unfathomable amounts of money and resources on car infra, and there's always some nonsensical defense like "it's just impossible to do it any other way!", as if cars are simply a law of nature. That lack of money can be solved by diverting some of the money going into roads into instead improving public transport infra.

The solution should NOT be investing in driverless cars, which are all owned by megacorps and leave people shackled to Google and Elon Musk.

You even mentioned another cliche, Geography, but then right below mention Switzerland. Same goes for NIMBYism and everything else you mentioned, how come these aren't issues when building massive 12 lane highways, but adding some dedicated bike paths suddenly turns into a quagmire that rivals the Manhattan Project in scale and difficulty?

Utrecht in the Netherlands is a perfect example of reversing course on car-centric designs. They had a canal, emptied it out to build a massive highway, then realized "hey, that's idiotic!" And turned it back into a canal and banned cars from the area completely. It's now a gorgeous city center free of cars, plentiful public transport options, accessible to wheelchair users and kids and literally everyone.