Has anyone figured out the best way to live track someone's position/location on a bike? Mr gozarch has an iPhone 4S and I want to be able to follow his progress when he's riding the Etape du Tour. He's downloaded the MotionX app, where you can view the phone's location on a map on their website, but you can't zoom in enough to get a proper level of detail. I suppose 'find my iPhone' might be an option, but are there any other alternatives?
We've considered using the facility on an Edge 510, but I imagine that's going to be heavy on data usage and battery life on the iPhone. I suppose battery life will be an issue whichever solution we go for.