While on a driving trip, I used Google Maps as my GPS, as my wife's Ford Fusion Hybrid does not have its own GPS. However when I synced my Droid with her car via blue tooth, it overrode the navigation, reverting to a silent turn-by-turn list. (There were no incoming or outgoing calls during this time) After a few minutes of frustration, she suggested turning off the blue tooth. Voila! The navigation came back. Then it went away again when I turned on blue tooth again. In my Prius, this is not an issue. I can have blue tooth activated and have navigation running at the same time. Anyone know if there is something with Ford's Microsoft Sync that creates interference and a possible solution? Or am I missing something obvious that might be the problem? Thanks in advance for any help.