GPS radar systems do exist, the passport 9500 has a GPS chip in it so it registers where there is a shopping mall or something that gives a lot of false positives so after a while it stops doing it

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2006 BMW X5 4.8is Lemans Blue/Beige/Dark Maple
-Nav, Comfort Seats, Heated Steering Wheel,
Rear Airbags, AUX Input
2009 BMW M3 Space Grey/Black/Carbon
-all options