DW-World.de
Deutsche Welle

Tilo and Wilfried Niebel from Saxony Anhalt don’t just restore old motorcycles. They have also built something truly unique. At 1.1 tons, "Big Mama" is likely the world’s heaviest motorbike. It was built with things the Niebels had on hand. For instance, the hand grips are made from old blow torches and blacksmith’s tongs control the brake and the clutch. The battery box used to be grandmother’s old lunch box and the arms of an old leather jacket cover the air filter. drive it! takes a look at this most unusual vehicle.