Audi e-tron II concept (photos)

Last September, Audi showed off its e-tron electric car concept at the Frankfurt auto show. The company brought another e-tron to Detroit, this one lighter weight but only having two-wheel-drive. This second generation e-tron is powered by a lithium ion battery just in front of the rear wheels, accounting for 880 pounds of the car's 2,976 pounds of total weight.