This is Either Brilliant or Incredibly, Incredibly Stupid, I'm Not Sure Which

The Nimbus 20-inch Ultimate Wheel purports to take unicycling to a whole new level of something or other.

You may note, there is no seat, there is no axle, there is a wheel and two pedals. Good luck riding this thing without harming yourself badly. And please stay away from traffic until you've gotten really, really good at it.

Also, I'm leaning towards Incredibly, Incredibly Stupid.