The Panzerbike is a German-built motorcycle with the engine of a T-55 tank inside. That's a diesel V12 with 620 HP. The bike is 19 feet long, 9 feet wide, and weighs nearly 5 tons. Actually, it's more like a tractor than a motorcycle, since the sidecar is built-in and it takes two people to steer. Still, Tilo Niebel and his friends at the Harzer Bike company created quite an impressive piece of machinery.
YouTube Video of the Panzerbike
Link via Ride Fast & Shoot Straight