That's a good way to get out of hardware..! They wouldn't have to strike a licensing deal either, although I doubt Apple would approve it. Isn't there a ban on turn-by-turn directions applications? I think they have a deal in the pipeline with TomTom that's taking longer than it should to bear fruit. Weren't there TomTom demos on the first iPhone with a dongle to provide the GPS signal..? I wouldn't be surprised if Apple licensed that in, but I would have expected it to see the light of day by now.I'm trying hard in the dash forums to convince them to move to an iphone app.