41. In 2005, an unreleased video for " Bicycle Wheels " was made public onto the Ugly Kid Joe forum site. 42. In his studio he mounted a bicycle wheel upside down onto a stool, spinning it occasionally just to watch it. 43. As he was riding rapidly down a hill, the bicycle wheel struck a granite paving block dropped by a wagon. 44. It also has the presidential seal emblazoned on the wheels, which are solid rather than spoked like conventional bicycle wheels . 45. The site also has 12-bottle wine racks made from bicycle wheel rims, and footstools made from recycled paper egg crates. 46. The distance was measured from an optical sensor attached to the hub of a bicycle wheel dragged behind the vehicle. 47. Many of Duchamp's readymades-- the bottle rack, bicycle wheel , snow shovel, urinal, coat rack and hat rack-- vanished during his life. 48. Picture this : a man racing down the museum's escalator carrying Duchamp's famous " Bicycle Wheel " from the Modern's collection. 49. He powered the plant and the neighborhood through a hydroelectric generator which he made out of bicycle wheels and piano wire. 50. Swavely goes grocery shopping using a shopping cart that he has turned into a bike trailer with two 24-inch bicycle wheels .