If it moves when you move, that's really weird... probably a program 'artifact' I don't have an in-dash NAV only a Garmin, but have you tried rebooting/resetting the NAV? But you'll probably lose all your saved info too if that's in labile memory.

Until now I didn't know you can Google map a postal code. THANKS... learned something today too, got a birds-eye-view of Metuchen, NJ as well.

BTW I pass on the dig... gives me the creeps just thinking about it... but who know's might be Jimmy Joffa it found.