Looking for a way around using just your iPhone? Here’s a good one if you don’t mind parting with 40 bucks. Garmin just put out StreetPilot, the company’s first navigation app for the iPhone. The app adds full turn-by-turn directions, lane assist, 2D and 3D map views, weather and real-time traffic updates to a device that probably already have in your pocket.
It’s a bit high-priced at $40, but downloading this from the app store also gets you free lifetime map updates, so at least you’re good for the long haul (or at least until you either break yout iPhone). It’s pretty well-integrated into the iPhone, featuring continued navigation while you make or take a call or play a song from your library,and works well with the address book so you can pull up your buddy’s home address instantly.