It would be great to be able to do that. Distance and heading to each waypoint with automatic advance to the next.
I'm surprised there are no apps that let me do this yet. Google Maps ELU is a bit vague. You can't use their GPS data overlayed by anything other than a Google map tile. Which is fine when you have only text guiding you to your next waypoint.
If this were done on iPhone, you would need an iOS app that would make the maps and send the waypoints to the device and have either a custom app or widget provide the navigation.
Am I missing anything? Does that sound feasible?