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http://electricbikereview.com/vintage-electric-bikes/e-tracker/ The Vintage Electric Bikes E-Tracker is a beautifully styled single speed electric bike that functions like a moped and can reach ~36 mph with the optional "Race Edition" upgrade or function as street legal at the default 20 mph. Good weight distribution and heat dissipation thanks to a custom made aluminum alloy battery box that's permanently mounted mid-frame, beautiful accessories with multiple color choices. Single speed drivetrain isn't much fun to pedal if you run out of batteries, pedal assist isn't super responsive and brake levers don't have inhibitors, the price can really add up with all of the extras.