Check this cool bike out. It was a concept last year, and now it's a reality. Pretty amazing, huh? Yes? Well, WRONG. Check it running and see why:

See what I mean? As soon as the Uno hits 20mph, the Kaneda-worthy red metal bullet transforms into this... this... this vehicle for the Ringling Bros. clown troupe? Except that not even a clown will ride it. The inventor, Ben Gulak, says that it's all for a good reason:

The original Uno was quite scary to speed up on. This is a much more user-friendly experience.

Sounds good to me, and the engineering seems quite neat, but why do you need an unicycle in the first place, then? [Popsci]