There are several high tech personal mobility devices floating around. The Segway may be the most notable of the geeky mobility choices out there. Honda has announced one of the strangest personal mobility devices I have seen called the U3-X.
The small device is very compact and portable, but has only one wheel. It looks like something a space age clown should be riding. The device fits between a riders legs, and looks much like a unicycle. The device can move in all directions, including side-to-side and diagonally.

To control the device the rider leans forward or backwards. The direction the rider leans in is the direction the device moves. Honda will be showing the U3-X off at the Tokyo Motor show on October 24.