One danger of having GPS in your car

Too much information, specifically your home address, may be stored in your car’s GPS device. “If a thief were to steal your car, all he needs to do is turn on your GPS and push ‘Home,’” Stein says. “Since your car was parked at the airport or long term parking somewhere, he knows you’re not home,” he says. Further, the thief has the added luxury of opening your garage door with the remote built into your car, pulling into the garage, and loading up your own car with your stuff.

Other useful vacation security tips at the link, including this:

...unplugging the garage door opener, otherwise "it’s very easy for someone to purchase a universal remote garage door remote control and find the frequency that yours operates on..."