www.ultimatecarparts.co.uk do a talking car alarm, (few others also do one), you can record anything on to your MP3 player...
like gunfire, "f**** off and leave my car alone" ...!! "or we are watching you" ....etc. and when the alarm is triggered itplays the recording..
You can also get a silent alarm that alerts you when somebody is near your car, so you can pop out and catch the
little f***ers at it. :thumbs: