Yep, like Chris and Matt say, it's the small cars that will keep Ford, GM, Chrysler in business. Vipers, Vettes, CTS-Vs, and Cobalts aren't what Joe Blow has in mind for DD duty.
I posted this on another thread; it's worth a read:
http://www.latimes.com/business/la-fi-factory18-2008oct18,0,4162059.story
As well, small diesels will only help the cause...