I really wish folks knew how to use their brain instead of ruining it for everyone else. I may be halfway close to my $6,800 SUV, but after that I'll only have enough to pay car insurance and the likes, so who knows when I'll get a GPS if cellular devices are banned by then.
Keep in mind that a GPS is different since you can't communicate with it. Some vehicles have these built in as part of the "package". When I got my new Jeep Liberty in 2010, I opted not to have one since I have a relatively good sense of direction. More recently I borrowed one from a friend. It proved useful for part of the trip, but overly annoying because it told me the directions too close to where I had to make the decision to be in the proper lane.
John