Here's my thoughts.
Hybrid cars are WAY more expensive then regular cars. A new Ford Fusion Hybrid is 27,000 base price. Why would someone buy that when they can get a new Toyota or Scion that gets 35 to 40 mpg for 10 - 15 grand? Besides, Hybrids are only really better for city driving.
There is absolutely NOTHING wrong with wanting a "Gas Guzzling Truck". I live in Texas, and almost everyone I know around here either does some hunting or fishing or both. I personally use my f150 all the time. I can't tell you how many times I've had to use the 4 wheel drive on it. I need that truck. Without it I can't do most of the things I do in my off time. But we also bought a used Nissan (I know, its not American) that gets 30 mpg. And it is tough! Everyone that I have known that has owned a Nissan has never had a problem with them. I can't say the same about the newer Fords/Chevys/Dodges (Especially the auto transmissions put in the last 10 years Dodge pickups)
I feel that if Obama hadn't hyped up the economy so bad it might not be quite as bad as it is now. And I understand that Congress helped with that, along with the media. But they caused the massive halt on people buying things, all the stocks to fall, and so on. People got so scared they stopped buying things, including new cars. It is only partially the creditors fault.
You can't only blame the banks for giving people huge loans they can't afford. If someone is making 3000 a month they need to be smart enough to know they can't afford a 1500 a month House payment! One of my best friends built a new house last year. The bank told him he was approved for 500,000! Holy crap! Can you imagine the payment on that! He told them he only wanted 200,000, which would put his payments at 1600, easily affordable on 7000 a month.
There are a lot things that factor into where we are now, and the Big 3s decisions are a small part of it.