eh, google maps works just fine on 3g/edge with my N95. And the N95's battery is not near the spec of the new iPhone's battery. Also, the Garmin Nuvi I have in my truck is not much on battery life anyhow. I'm sure some of the big boys like Garmin or TomTom will now also develop an app for the iPhone like they have with other phones. Garmin Mobile XT is an awesome mobile GPS platform.the on thing they did not tell you about the GPS is that it still uses the net to get its maps. this could be faster with 3G yet in those locations where you only have EDGE this could be a problem. The fact of the mater is that this will eat up more of your battery than a standard GPS unit. So If anyone wants to create an native App for the iPhone that uses maps stored in the phone itself and not the web. Let me have a free copy because I wrote it first. If you are feeling extra gen. yoou can give me a percent Ya right. Anyways I said it first.