It's all relative. Plenty of poorer people have cars, but instead of $150k cars, they have cheap-o $25k cars. We can't have those kind of people in our neighborhood.

Here in Singapore, we only have about 1 million licenses for cars total. They are auctioned off to the highest bidder.

So there are no cheap-o $25k cars. (The car itself might be cheap, but you need the license to run it.)

My description in this context is a bit tongue-in-cheek, but this is actually a great system given the limited road space we have here. And auctioning off the licenses is about the most economically efficient way to allocate them.

Here in Tokyo, they do things a little differently (and pretty sensibly I think): you simply can't own and register a car in the city unless you have a place to park it. So you have to get some kind of proof from the police showing they've certified you have a parking space that will fit the car, and they come out with a measuring tape to check too, based on the car's actual dimensions. So if you can afford a parking place, you can own a car. Otherwise, no. So car prices are subject to market forces and not artificially constrained; the constraint is the actual land area available for parking, and that's subject to market forces too, since it could be used for something else like a building, so parking tends to be expensive.