For years I've seen people joke about an electrically powered unicycle. Well, here it is. The design sounds conceptually like the Segway but in execution is totally different.
http://www.motorcyclemojo.com/articles/the-uno/
http://www.the-uno-tomorrows-transportation.com/
http://www.the-uno-tomorrows-transportation.com/
http://www.the-uno-tomorrows-transportation.com/
http://www.the-uno-tomorrows-transportation.com/
http://www.the-uno-tomorrows-transportation.com/
http://www.the-uno-tomorrows-transportation.com/