It’s possible for billions today right now including millions in America. So maybe you should expand your understanding of what is possible instead of being a reactionary fighting change.
Billions of people in the world live without cars. The possibilities of this don’t need to be explained since they are actively occurring across the world. Within America there are ~10% of household that do not have a car. https://usa.streetsblog.org/2021/10/22/u-s-cities-have-more-car-free-households-than-you-think This is a good thing btw, and it should fully demonstrate that such a life is absolutlely possible, and could be improved and expanded.