CNG powered Mercedes SL 600 by Speedriven packs 800 hp - seeks natural gas speed record

An engineer down in Texas wants to make his Mercedes-Benz SL 600 clean and green?His name is Bernie Towns and he has turned this 2007 SL600 Mercedes-Benz roadster into a 5.5 liter twin-turbo V12 CNG-powered speedster he hopes will break the record for the fastest natural gas-fueled car around. That's the Texas part.Partnering with Chicago tuner Speedriven, this very unique SL 600 now develops