I use LandAirSea to track what my wild teenager is up to. Without it he would be galavanting around town, doing god knows what. With LandAirSea in his car, I know where his car is (he's usually pretty close to it), how fast he is driving, and where he has been. I also love that you can wire it right to a constant power source, like a battery. No pulling it out to recharge!!!