One wheel

I saw a cyclist riding a bicycle on one wheel today. I've seen people riding unicycles before, but this was a small-wheeled bicycle.

The rider looked very comfortable, pedaling, moving forward. The rear wheel was (obviously) on the ground, front wheel raised, frame at an angle to the ground. There seemed to be a magic balance point. I wonder how long it took him to learn that somewhat odd skill.

Oh, don't worry - I'm not going to try it!