Does the above image look boring to you? Well it is the Green Engine category. Of course in this case, the term engine is used rather loosely. Tesla‘s full-electric powertrain claims the category, taking the victory away from Fiat’s 875-cc two-cylinder CNG engine. Considering the popularity of the Tesla Model S and all the accolades it has garnered over the last year, it’s only fitting that the American electric automaker claims another award. Performance from the Model S electric powertrain ranges from 302 hp to 416 hp.