Will Google Navigation work over wi-fi with no 3G data plan? Hi! Recently received ticket for a cell phone violation while looking at Google Nav with my Droid 2 in my hand. Because of this, I'm very interested in purchasing a Moto Car Dock after all these years. With dual core processors and 4G coming, I'm afraid that my phone, and especially a car dock made specifically for it will become obsolete soon. Since I'm gonna have to inevitably upgrade, I am hoping to continue to use my Droid 2 as a PDA/standalone navigation unit. Assuming I can wi-fi tether my Droid to a future phone, will Google Nav still fully function? Has anyone tried this yet? My car dock purchase will be based solely on this factor... Thanks!