In fact, the Tesla Roadster, an expensive sports car, has already successfully demonstrated that electric vehicles can be more than mere golf carts by out performing a Porsche 911 on key metrics such as acceleration. In a move to appeal to a more mass market and to reach a larger production scale to drive down unit costs, Tesla next developed the Model S, a four-door family sedan. The model S received an outstanding market reception, and was awarded the 2013 Motor Trend Car of the Year. Tesla is also working on a newly designed seven-seat electric vehicle- the Model X – in an attempt to combine the best features of an SUV with the benefits of a minivan.