Driving down the road and GPS works on iPod? I was riding in the car today and the as I was traveling home, decided to pull up maps on the iPod.  I know that GPS isn't used by iPod and uses wifi to triangulate it's position.  However I wasn't connected to any wifi as I was traveling through town and my iPod kept up with my position?  How?
I'm guessing, since I couldn't find any confirmation, but the iPods use the Skyhook network, which is basically a big database of wifi access points and their approximate location. Since you wouldn't have been connected to a network, (here's the guess) the geolocation service must've cached some amount of the database for your general area.