This group is intended to be a place to hold discussions about technology and techniques by which the fuel economy of automobiles may be improved. Hybrid-electric, fuel cell, "green" diesel, and other engine technology discussions are welcome, as are vehicle-related economy discussions. Please, save the conspiracy theories for someplace else; we want real technology with measurable results.

In particular, discussions relating to the causes of, or even the existence of, climate change will be terminated immediately and without apology. Repeat offenders will be banned.