howstuffworks.com: Introduction to How the Aptera Hybrid Car Works. What if you could drive across the entire United States — from East coast to West coast — on just one tank of gas? Sounds like a crazy idea, right? Ever since Nicholas August Otto developed the gasoline engine in the 1870s and Rudolph Diesel invented the diesel engine in the 1890s, people have improved upon vehicle efficiency in fits and starts.

As concerns continue to grow over the possible consequences of global warming, nations and governments are beginning to react. The European Union continues to revise its strict emission standards, and ultracompact cars like the Smart Car, the MINI Cooper and the iQ Car catch lots of attention for their space- and energy-saving qualities. In the U.S., meanwhile, President George W. Bush signed an energy bill on Dec. 19, 2007, that encourages automakers to produce more fuel-efficient vehicles and increase the industry average to at least 35 miles per gallon by 2020. [ read more ]