Ms Grumpy, Lojack is a common tracking device, and there are others as well. The $700.00 price tag is a lot, but consider the price of never seeing you car again!
Starter kills can be bypassed by most punks now days, fuel shut-offs can be bypassed by a car hauler with a electric winch or tow truck. Just something to think about if you car is out in the public left unattended, just the times we live in.
http://www.lojack.com/Cars-Trucks-An...k-For-Classics