Following in the footsteps of the Audi E-Tron SUV, the Audi E-Tron Sportback Concept is a sleek, muscular take on an all-electric vehicle. It's powered by one electric motor on the front axle, two on the rear, and a low-mounted battery pack. The system is capable of delivering 370 kW, or roughly 500 hp, good for a 0-62 time of 4.5 seconds and range over 300 miles. It's similar in size to the A7, with 23-inch wheels, digitally-controlled Matrix LED headlights and a futuristic interior that uses screens to replace everything from gauges and controls to the exterior mirrors. Unlike most forward-thinking concepts, this one's already slated for production, with an expected introduction in 2019.