Looks like the Uno now has 2 wheels.
Remember the Uno? That's the parallel wheel unicycle (dicycle?) built by Canadian, Ben J. Poss Gulak. The young student, now an MIT sophomore, found riding the original a little scary once he began to pick up speed.

Read more here...
http://thekneeslider.com/archives/2009/11/04/uno-transforms-from-parallel-to-inline-wheels/Watch the founder, Ben secure $1 million for a share in the company...
http://www.the-uno-tomorrows-transportation.com