Here what Bellevue PD didI've since spoken to a Boston cop, who essentially laughed when I told him I was considering using a Club or an Autolock. If someone wants to steal your car, they're gonna steal your car. The best thing you can do to prevent theft is to park in as safe a place as possible, roll up the windows, lock the doors, take the key, and have good insurance. If I drove a $50,000 Bimmer, I MIGHT be able to justify spending $700-1000 on a car tracking device like LoJack, but I can't justify spending that much on a $15,000 Corolla.