That is a really interesting idea. The big three would probably deeply resist this however, as further hampering their "competitiveness."
American Mfgrs seem to suffer from the more entrenched issues of reliability and weak technology. Perhaps if they received tax incentives to upgrade their tech and reliability, but of course gov. micro management seldom really works.
Business-as-usual won't cut it when they're losing money at the rate they are. If they're going to get a bailout, it should have strings attached that they can't evade.
It seems to me that the auto shows had a three-person concept commuter car. Googling...
Yep, it was the Ford Reflex. Shooting for 65 mpg with an advanced diesel-electric hybrid engine. Only has room for one rear-seat passenger. It might even attract chicks...