Like a surfboard... that you have to pedal... and steer with both hands

The "sideways" bike. So, the obvious question: WHY?

Killian says that the back-to-front balance, combined with the drifting ability of the independent wheels "affords you tremendous grace and motion. It's dance-like. It's mesmerizing and entertaining."

Lest we seem like jerks whenever the issue of clown bikes comes up, let's just read a statement into the record here: It's pretty neat, the human spirit for playfulness and inventiveness, and the inspiration we upright mammals get from anything on two wheels.

The obvious next step is to build a sideways tandem, which could end up looking sorta dirty-dance-like.