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 4:40pm 5/28/08 4:40pm