My family is quite the opposite of wealthy. It has nothing to do with class. The fact that the US did cities wrong doesn't mean that somehow 15 min cities don't work. I read the whole thread and you seem to be either really confused or rather short of reading comprehension. You seem to have the impression that a bike lane is an asphalt gutter next to the cars where only athletic young men in full sport gear ride bicycles. But in Europe bike lanes are segregated wide, well conditioned spaces, where kids, people with mobility limitations, adults and elderly all share a slow speed lane safe and protected from cars.