Hybrid Technologies Building 220mpg Supercar That's Faster Than ZR1

Hybrid Technologies, makers of electric Minis and the Mullen Motor GT, are working on a lithium-ion/gas plug-in hybrid not only capable of achieving 220mpg, but horsepower numbers that promise to eclipse those of the 638bhp Corvette ZR1. Speaking to Popular Mechanics, product development engineer Ron Cerven revealed… »5/28/08 4:40pm5/28/08 4:40pm