We have all seen bikes which get added support thanks to electrical motors which gain power through the usual pedal power. The Copenhagen Wheel practically does the same thing but it has an added feature with its iPhone compatibility. Apparently it connects to your phone via Bluetooth and records trip information such as speed, direction and distance traveled. It can even pull information from the web to alert you of traffic and weather conditions. This Copenhagen Wheel is expected to be released next year and may retail somewhere between $500 to $1,000.
(Source) Oh Gizmo