The electric motorcycle world has never been short on ambitious promises, but a US$50,000 price tag for a bike that tops out at 75 mph (120 km/h) is enough to make even a well-heeled biker do a double take. I’m talking about the Brabus Urban E Fragment Edition, a collaboration between German automotive aftermarket tuning company Brabus, French electric motorcycle maker DAB Motors, and Japanese streetwear designer Hiroshi Fujiwara's Fragment Design.