This is pretty much what the US did to itself in the first place - bulldozed half the cities in the country to make them car centric. There’s no reason you can’

This is pretty much what the US did to itself in the first place - bulldozed half the cities in the country to make them car centric. There’s no reason you can’t do the same thing in reverse. Buildings are not actually all that permanent (especially in the US where in most of the country they appear to be made out of wood & plaster).