I have had my daughter's Saturn stolen twice and it was recovered both times because of Lojack. The only problem with Lojack is, it is activated AFTER the police put the VIN number in the stolen vehicle database. Once the number is entered, the Lojack (somehow) knows and the satellite activates the unit. The first time the car was stolen, it took the San Diego Sheriff's about two hours to come to my home and take a report. Once the report was taken, the Sheriff called in the VIN number. One hour later they had a signal on the car and the driver led them on a short chase before escaping on foot. The good news is we got the car back with minimal damage. I think that it would be easy to hide a Lojack in a trail wired into 12 volts all the time. If the power is cut, it has an internal battery that will last up to 3 days. I will never buy a new car again with a Lojack.