Yesterday, my Dad tried to give me an older model of an AutoLock. You know, the security device that immobilizes the brake pedal. It would not fit on my 99 S-420. I see the Pro model now availalbe has a list of cars that it does not work on but my car is not on that list so I'm wondering if the pro model will work. Once again I was surprise to see no mention of this device when I did a search of all forums. Any feedback on this device? Thanxxx in advance.