Sorry, but this is just wrong. The simple truth is that people's opinions are usually a product of their upbringing and experiences. People raised in a warmongering society tend to favor warmongering, and people raised in a peaceful society tend to favor peaceful societies, for instance. In the case of cars, Americans really do favor cars and the car-based society they live in, because it's what they know and are familiar with.

So, if you try polling a bunch of suburbanite Americans and ask them if they'd favor abolishing their suburbs and turning them into extremely dense and generally car-free (or at least "car-inconvenient", i.e. narrow, slow roads and very little parking) urban areas, of course the vast majority of them are going to say "no". You can see it right here on HN every time this kind of discussion comes up: regular Americans like things the way they are. If they didn't, they'd be voting for something radically different, but they aren't. Sure, there's a minority of anti-car-culture Americans and even some activists, but they're a minority.

As for your characterization of Japan as an authoritarian society, that really seems extremely ignorant and probably even racist. It's a democracy, in case you've never read Wikipedia, so just like any democratic society, if people get angry enough, they'll vote for someone different, which happens from time to time.