Dandy Horse

The dandy horse, an English nickname for what was first called a Laufmaschine, then a vélocipède or draisienne, and then a pedestrian curricle or hobby-horse, or swiftwalker, is a human-powered vehicle that, as the first two-wheeled vehicle, is regarded as the first bicycle. The dandy horse is powered by the rider's feet on the ground instead of the pedals of later bicycles. (Wikipedia)