MMM
Cool invention!!
More info at… http://www.gizmag.com/go/2758/
Looks like Guiness should expect an application for “world land speed unicycle record for power assisted pull glide”.
That looks like the perfect thing to get you to the top of those pesky hills on your BC wheel. Good luck from there though… 
Why don’t they just get a motorcycle?
Why don’t we just get a bike instead of riding these unicycles?