Hard mode, don’t mention cars.
Asphalt is horrible for the environment, and the amount needed per person in a suburb is obscene.
I know, we all know suburbanism sucks but so does ruralism. Urbanism is the only acceptable form of human habitation.
where do you think food is going to come from in this 100% urbanised world
We could tear down the suburbs and grow it closer to the cities, and grow a lot less of it. First off ban meat consumption, second stop growing water intensive crops, third zone in urban farming to cities and then the countryside loses all value that it has.