Heard about this on a local radio program. http://www.teensurance.com/ It is an interesting service that can help parents to know where you children are going and how they are driving. The radio program said if you have it you could save 20% on your teens auto insurance. The guest speaker on the radio show who mentioned this was from www.mvpinsurancegroup.com It's kind of expensive but might be worth the cost for some.
i have heard about this too - it is a tracking device. I no longer need it, but I wonder how much it costs....