you want lojack on your car? Is not cheap and I think there is some kind of annual or monthly rates too if i'm not correct.
I've heard someone build their own lojack with pda and gps software. I'm not sure of the details but could be a better alternative if you want gps tracking type. Also Clifford has a gps optional tracking w/ annual service plan too.
lojack is a waste of money.... if they are smart enough to get your car with all the layers of security they'll have it stripped within an hour. Your car gets stolen at 3 am. You have no idea what even happened until 7:30 am when you go out to go to work or school. you attempt to track a shell.
early warning is when your car moves without the lokack sensing your sensor on your keychain then the company calls the cops right away so if you are for instance sleeping at 3:30 and wake up at 7:30 the fools will have been arrested and your car might still be safe