[rahimnathwani]

Your point about used home sales enabling the sellers to buy new homes applies equally to used cars.

But cars are different from homes:

1) No zoning preventing new cars from being built

2) Cars wear out within a decade or two

[freehunter]

Cars vs houses is actually a pretty interesting comparison. Houses wear out after a decade or two as well, we're just willing to spend more money keeping a house in good working order than we are keeping a car running. If your central air goes out, it could cost you $7000 to fix it. If your car's engine goes out, that repair would cost $4000. But no one throws away their house, they just pay to get a new air conditioner put in. Few people would put a new engine in their car, though.

The average price to replace a roof is $12,000. But again, people are more likely to replace a roof than they are to replace an engine in their car. They'd just scrap it and buy a new car.

Houses wear out just as fast as cars do, but we're more willing to fix our house versus fixing our car. And it's not just a function of cost: you can get a new modular home for $50,000 and it will last decades. The double-wide I grew up in was installed in 1994 and there are still people living there over 20 years later. Very few people keep $50,000 cars for 20 years, though. And I see a lot of people with $5000 used cars parked in front of $150,000 houses. But if they bought a $50,000 brand new manufactured home, they could be parking a BMW out front instead. And if they wanted to, they could throw the house away just as fast as they throw away their car.