Same problems reported in the UK.

Next step up is that they break into cars which have the ring-marks left on the windscreen where owners have carefully removed the GPS and its mount to store them in the glove-box or trunk. So clean the screen inside as well, if you have that type of mounting.

One way to fight back is to input a false "home" destination that is near enough home to be useable, but not near enough to help a potential burglar. I know one guy who chose his local police station for this purpose, but he hasn't had a unit lifted yet AFAIK.