the problem with cars is still like 30-50% of usable area is converted into roads and parking, which means things are 30-50% further apart, which means it takes at least 30%+ longer for people to complete a transportation loop, which creates 30%+ more traffic while putting more people out of walking distance.
This compounding effect of parking really means cities without alternatives to cars result in higher housing costs, more wasted space, and more congestion than cities with less dedicated car infrastructure, and it raises agricultural prices as farmers compete with suburbs for land.
Its one of the deep inefficiencies of the american “cars only” system of transit.
Edit: This isnt even getting into things like the safe area of travel for kids has been reduced by like 95% from like 100 years ago and the many other problems resulting from society having to sacrifice monstrous amounts of safety and community protections to make cars just barely work in most cities.