A question about the GPS feature that isn't very obvious to me - if I travel and find that I am in the middle of nowhere that doesn't even get a cell signal (and therefore no 3G or edge), how will the Maps app work? The way I observe the first gen iPhone is that Maps accesses the net to build the map. And further more, if I travel internationally and Maps depends on a data connection I would expect some hideous roaming fees. Maybe this will all be irrelevant if an App from Tom Tom with maps saved on the iPhone itself is released. Thoughts?