Sure, we all know the story about how Detroit developed, and then kept under wraps, a 100mpg carburetor is false. However, affordable 80mpg family sedans are real: behold the Supercar! They are the results of a nearly decade-long partnership between The Big Three and the Clinton administration. However the program was quietly shelved last June, the victim of the Bush administration, and corporate backpedaling. Read the whole sordid tale here. [use username/password for login] In the meantime, you'll have to settle for one of these.