I live in the middle of New Mexico and am often driving well outside of even Verizon's mighty 3G network. A GPS that requires 3G to upload map tiles isn't particularly useful to me.
Anyone know about GPS apps that don't require a connection? The 16 GB flash card could easily store maps for all of N. America, so this is possible ... at least in theory.
I know the Google maps app will download map tiles along your route if you program a route beforehand, but that's not useful if I need on-the-fly navigation when I'm out in the boonies.