Electric bike are gaining popularity and Yamaha has released the EC-03 for 2011 for that market. Green is the in-thing everyone wants to jump to. It is equipped with 50V lithium battery with 0.58kW AC synchronous motor that generates 1.4kW of power and 9.6Nm of torque and can be charged to the ordinary wall sockets. It is also lightweight and small so that you can park this bike inside your office maybe near your desk.
Read more info here:http://www.yamaha-motor.eu/eu/products/electric-vehicles/commuters/ec-03.aspx