Mercedes Benz has a wonderful new converter out for any size vehicle with the Mercedes engine, large trucking rigs or cute sporty car. The Bluetec technology is a multicomponent system to change them into highly green automobiles, with the E320 getting 37 mpg in test runs. The picture above is the already converted Mercedes-Benz E320 Bluetec. The Mercedes Benz Bluetec engine is the world’s cleanest diesel engine both quiet and clean, but lets not forget fast. Check it out here.