Please more responses. I am in the same boat. I travel to cities with my old commuter and want excaclty what you are looking for. (Just explore)
I know of at least 6 other people that are looking for the same thing.
We just want to hop on the bike in a unfamiliar place and let gps guide us. (We will map the night before)
To much of our time is used up looking at maps and cross streets. We just want to be care free riders
This is a clear case of the technology being there but no one coming up with a simple user interface for people to use.