According to Ronn Motors, the Scorpion supercar will not only achieve 0-60 mph in just 3.5 seconds, but also earns green credentials by getting 40 miles per gallon. This trick is achieved by having a hydrogen-hybrid engine under the hood (also known as hydrogen injection, Water4Gas or HHO.) Small doses of hydrogen are generated and fed into the fuel mixture, making for a more efficient burn. Apparently this technology is a little controversial, but that hasn't stopped Ronn from putting together a bloody good looking car around that special engine, as the second photo underlines.

Best of all, though there's no hints on pricing and the car is still in prototype stage, it may be available in a limited run as soon as Fall this year. [Gas2.org via New Launches]