Walking vehicle
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A walking vehicle is a vehicle that moves on legs rather than wheels or tracks. Walking vehicles have been constructed with anywhere from one to more than eight legs. There are many designs for the le
A quadruped walker, the General Electric Walking Truck, on display at the U.S. Army Transportation Museum
ASIMO (2011 version)
Wheel
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A wheel is a rotating component intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle, which is one of the six simple machines. Wheels, in conjunction with
Spoked wheel of reconstructed Celtic funerary wagon, 550 BCE, Hochdorf Chieftain's Grave, Germany
The Ljubljana Marshes Wheel with axle, the oldest wooden wheel yet discovered, dating to the Copper Age (c. 3130 BCE)
A depiction of an onager-drawn cart on the Sumerian "War" panel of the Standard of Ur (c. 2500 BCE)
Solid wheels on a heavy temple car, contrasted with the lighter wire-spoked wheels of the black roadster bicycle in the foreground