An electric sports car with a 311-mile range, 600 horsepower, all-wheel-drive and 15-minute recharge time could soon be real if Porsche decides to build its stunning Mission E concept. If it does, its first all-electrically powered four-seat, four-door sports car won’t exactly be affordable to the masses, though trickle-down economics and mass production would undoubtedly lower costs for future models. The source of Porsche’s string of incredible claims is the first 800-volt power system to be incorporated in an automobile. Conventional electrics use 400-volt systems. Although the car is a concept, its electric drive system has been proven in motor racing, in the Porsche 919 hybrid that finished 1-2 at this year’s 24 Hours of Le Mans endurance race in France.