This is just brilliant, before you go replacing your bike to go with a electric mode of transportation, consider getting the Copenhagen Wheel. This simple device replaces the rear wheel of your bicycle, giving you power you need to overcome any commuting. It has a built-in motor that will help you conquer hills or just show up to work a little less sweaty. The wheel stores energy every time the cyclist puts on the brakes and then the power can be used when riding up hill. It also has a range of other features which include built in sensors that can detect speed, distance, direction, the data is then sent via Bluetooth to the cyclists mobile phone. It uses a technology which is similar to KERS (Kinetic Energy Recovery System), when you brake, the kinetic energy is recuperated by an electric motor and then stored by batteries within the wheel. So brilliant RIGHT! Ok go HERE to get one and learn more detailed information.
-JD