Even in Europe, cars are quite common for everyone. Maybe less for the middle class in big cities, but the traffic in London and Paris is quite terrible.

The US is a pretty disparate place. Here you go:

https://en.wikipedia.org/wiki/List_of_U.S._states_by_vehicle...

If you compare to Iceland and New Zealand, you have to compare with rural US states. But still, not as bad as I thought TBH.

In many of those countries there are so many cars because they’re needed during peak tourist season

And guess where those tourists are from