Took one for a test drive today. It kept up with most traffic along Parramatta Rd in Sydney. Sat on about 75km/hr comfortably,I think could cruise at about 80+ if need be, but don´t know how long it could sustain it. I´m thinking of buying and riding back to the Central Coast, about a 100km trip. I think it´ll handle it, but I´m prepared to give it a rest if it cries too much.