Q: I saw an electric unicycle on a city street violating various traffic laws. I looked up what I saw online, and some of these unicycles have top speeds of over 50 mph. Do you have thoughts on what ...

That thing, in this case, was the RYNO — a $5,300 one-wheeled, self-balancing electric motorcycle. (The term "unicycle" is not welcome here.) The idea for the RYNO was born seven years ago ...

[XenonJohn] wrote in to let us know about updates and a recent test drive of an Electric Self-Balancing One-wheeled Motorcycle, fresh from the beach where he says it proved to be great fun to ride.

DIY electric personal vehicles are a field where even hobbyists can meaningfully innovate, and that’s demonstrated by the Mega-Wheelie, a self-balancing one-wheeled skateboard constructed as an ...

The law permits electric one-wheeled vehicles that have a 2000-watt motor and a top speed of less than 20 mph. These fit in a category the law calls Electric Personal Assistive Mobility Device ...