Buried in the middle of the article (I knew it already, but you have to hunt for it): > To be allowed to purchase a car, you have to be able to prove that you

Buried in the middle of the article (I knew it already, but you have to hunt for it): > To be allowed to purchase a car, you have to be able to prove that you have somewhere to park it. That's the main reason IMO. If you drastically limit the number of car, of course you don't need nearly as much curb-side parking, and can have much more real estate available for productive use.