I just got this great idea, I am a writer not a marketer, so go ahead and run with it if you like. If I ever see it being used and I see no reason why this would not become popular some day, I will tell everyone that I had the idea first. The GPS device is here to stay and besides the stand alone devices like the Garmin, TomTom, and Magellan, people also use GPS to navigate from their smart phones. I thought that since these devices are able to locate your car, that they should also be able to locate other cars.
How great would it be, if after you pull into a parking lot that your GPS can point out all the empty parking spaces for you? Think about all the time this might save you from going down that aisle where there are no empty spaces and instead allowing you to pick a choice spot. This application might also activate a camera in your vehicle that keeps track of parking lot activity near your spot, which would be handy in case someone smashes a carriage into you, or scrapes your bumper or worse and then takes off.