George,

This stuff never ceases to amaze me, next it will be a bike GPS with HRM, cadence, power, video camera, cell phone and attitude sensors. If you take a fall it will record the event and automatically call 911 and give them your location and current state of health. We are not that far away, the new phones have everything but the cadence and power meter aps in them but they do have the wireless interface (bluetooth) to couple into these devices. Some one could write and ap for a Google andriod phone and there you'd have it. The phone goes for $179 - not too far away from this device.

It won't be long now...