http://youtu.be/_Me1P0JljVk

Honda UNI-CUB

The Honda UNI-CUB is a personal mobility device that the rider controls simply by leaning (video). The omni-directional driving wheel system allows the UNI-CUB to move in any direction including sideways and diagonally. UNI-CUB is the successor to the 2009 U3-X concept.

via Wired