OK I'm planning to upgrade to the Thunderbolt soon but I have a question about GPS. I am upgrading to the Thunderbolt and I am just going to use my old Droid for a music storage device since I already have the car dock/charger/3.5mm wire for it and I don't want to fill the Thunderbolt with useless junk and have to order a new car dock for it. My problem is that I'm in college and have a part time job as a pizza delivery driver. Aside from my music player I used my Droid for my GPS and it worked awesome. My question is that when I upgrade to the Thunderbolt will I still be able to use the GPS on my Droid? I'm assuming no but I just wanted to make sure.