if you had a idea how many cars are manufactured for every licensed driver in this country, you would get a picture of how this works. compare that number to say 1980. now there are millions of cars on rental lots, and on lease from dealers. the trick from their perspective is how to maximize the number of cars you use, by minimizing your use. my cousin for instance had to rent a car to drive to my house for a visit, because his lease car was near its mileage limit, and his own second car is too big and gets poor gas mileage. if GM keeps channel stuffing, where the hell do all those cars go? as a second thought they would like to pull this trick with housing, but when the bubble burst a lot of second homes went on the market or in foreclosure. the net net of that is that a few people have more than one home, and many people live in crowded apartments or condos.