Apple Bike Computer
“An Apple Bike a Day Keeps You Ticking”
The Apple Smart Bike will allow cyclists to communicate electronically with one and other, while sharing a multitude of items like speed, distance, time, altitude, include, decline, power, heart rate, cadence, derailleur settings and much more.
In order to use the the Apple Smart Bike, you must have a iPhone or iPod Touch.
Source – BikeReviews.com.