^^ werd. By the time you find your car, its gonna be a shell.. Best bet is get one of those two way paging systems... add an extra horn in the trunk or somewhere besides the hood so that if they cut the hood horn, they will be caught off guard... by the time they find the your other horn, you should already be at your car already...
protect yourself by using an autolock to lock the brakes... and close your windows all the way.. and locking your trunk..