Bulging fenders? Check. Nubuck leather-wrapped everything? Check. V12 rumble? Ch-- oh snap. For the first time an Aston Martin, car, albeit a concept, has an all-electric powertrain instead of pistons. The Brit carmaker says the all-wheel-drive DBX Concept is "a thought starter... that envisages a world where luxury GT travel is not only stylish and luxurious, but also more environmentally responsible." Marketing buzz aside, the DBX is definitely packed with interesting tech. It has drive-by-wire electric steering, toughened, "auto-dimming" windows, heads-up displays, in-wheel motors and the piece de resistance, lithium-sulfur batteries.