That's a myth. The program only took 690K cars out of 240 million. That's about .03% of all used cars.
The program was attempted feel good payoff to U.S. car unions. It didn't work and the program did nothing to "stimulate".
I see more used car lots filling up around me every day. The real reason that used cars may be higher is that people are buying less new cars. In places where the economy is tanking worse than others used car prices are up because that's all they can afford.
Use your local Craig's list to find a used car. Buy one from an owner. There are good cars available.
You are making assumptions that are incorrect. Used car sales are down. Demand is down, prices are up, which means supply is down.
http://www.autoobserver.com/2009/02/used-car-sales-struggle-along-with-everything-else-auto.html
http://blogs.cars.com/kickingtires/2010/01/used-car-prices-could-drop-in-2010.html
Only figure I could find was 40 million used car sales a year:
40,000,000 and 690,000 = 1.75%
Remember that in a recession most will keep the car they have rather than buy new or used. So less go on the market from that as well, but demand will reduce also.
Used cars can be sold multiple times and this idiot government DESTROYED the cars. So it’s a muliplier past 1.75%
http://goliath.ecnext.com/coms2/gi_0199-1209438/Of-the-around-40-million.html