I think it's only true up to a certain value of n. Once the mass transit system has a subway system that has a train every 5 minutes and stops at most a block

I think it's only true up to a certain value of n. Once the mass transit system has a subway system that has a train every 5 minutes and stops at most a block from any given location, it makes very little sense to drive. When I visited Hong Kong, it felt like this -- massively convenient and efficient. No time wasted looking for parking under $20/hr.