Edmunds on the Automotive X PRIZE

Edmunds Inside Line gives an overview of the Automotive X PRIZE, including some pictures of concept cars that might be a start towards ideas for competitors. They note that lots of concept cars can get 100 mpg (or equivalent) as specified in the rules, but doing that while handling realistic market needs like 4 passengers, regular traffic situations, manufacturability, safety standards, and environmental standards as also specified in the rules is quite another thing.