Having ridden motorcycles alot of motorcycle security revolves around locks with built in alarms. These locks have movement and tilt sensors so if somebody is tampering with the lock the alarm inside the lock will go off. Heres what I use for my motorcycle:

http://www.xenasecurity.com/product/.../main/showall/


Well I thought about adding this as an extra layer to my car in addition to the usual stuff. Just want to see if anyone had any creative ideas.

The idea I had so far was to lock it to the The Club. Sure the the club can be easily bypassed but at least when they go to move it the lock alarm will go off and should wake me up since my car is only 20 feet away from my bedroom. Its a 110db alarm and it sounds very similiar to the piezo "pain sirens" people put inside of their cars. Also I thought using a heavy duty motorcycle chain and locking it to one of the wheels. Sure they can still steal the car and drive off but not sure if they would want to with a chain on a wheel and the lock alarm going off it would be really suspecious.