Audi Hydron - The Audi Hydron is a 3 seat, electric amphibious vehicle whit the looks of a road car. The Hydron is especially designed to give an original mix between land and water capacities. In water, the Hydron is propelled by hollow axe wheels. Each wheel is driven by an electric engine that can turn 90Â°. Other advantages of independent turning wheels, are the several driving modes on land such as a the parking mode and the rotation mode. It is also possible to have front, rear or 4 wheel drive.