It looks like half a motorcycle, but this one-wheeled contraption is actually pretty awesome looking. And it's quite impressive to see someone scooting around on a single wheel so comfortably.
A US company called Ryno Motors has built a one-wheeled electric scooter that uses a gyroscope to keep itself upright, like a Segway. The device, which is called the Ryno, requires you to lean forward to accelerate and backward to decelerate. http://www.wired.co.uk/news/ar.....ed-scooter