You can use this as a car anti-theft device by simply adding a chain loop and a matching lock. have a high speed chase they are in for a big surprise / the lock is important because car thieves are used to picking or picking locks faster than I can find my key. I've seen videos of the club's lock being picked. opens in less than 2 seconds / I used a German Abus 37/60 granite lock and a 33" 2600lb gauge chain. Very few Americans know about this castle. I usually lock up the rear wheel, which can make their job difficult. just tow the car