[pyrale]

Public transport is not a valid alternative because cars create endless neighbourhoods.

You can't make an effective transportation system with low pop density because few people will be able to get to stations on foot, and you can't make a fast transportation system because low density means downtown is very far away.

On the other hand, in downtown, cars are a big nuisance: they take most of the public space, they pollute, they are dangerous, etc.