A one-wheel Segway? This is an electrically powered unicycle with the gyroscopes used to keep it upright, much like the Segway. Should they mass produce this? (video after the continue link)
EniCycle works like the Segway, but it uses a single wheel versus the dual wheel standup positioning of the Segway. This makes the EniCycle a good deal more portable than the Segway. It is powered by a 1,000-watt electric motor. Speed and direction are controlled by leaning forward and leaning left and right.
No pricing yet as the inventor is still trying to get backing to produce the thing!