Rick Johannessen of Vancouver, Wash., rides his self-balancing, electric unicycle along South Franklin Street on Tuesday. Off a cruise ship on vacation, Johannessen was riding around downtown as his wife shopped. The unicycle, using three gyroscopes, works similar to the Segway. The unit has a 10-mile range at 15 mph and a 325 pound weight limit. Johannessen said he is an investor in the Vancouver-based company.