TweetIN A FORMER LE's POINT OF VIEW, let's take a trip back to reality....
Granted, as many have pointed out, this is a pretty good idea. However, there are some problems with it:
1) Unless your vehicle is parked near your bedroom window (which in not the case with me), pressing the panic button won't work very well, if not at all.
2) In reality, once someone has invaded your home, there is a very slim chance that they will allow you to reach for anything without first harming you or your family.
3) It has always been stated that should you become a victim of robbery, home invasion, etc., it's best to simply cooperate and don't give the suspect any reason to further harm you. If the suspect is high on PCP or crack, an alarm will only piss them off more and it only takes a second to pull the trigger of a gun.
It's a known fact that most crime victims are too much in shock and/or fear to even react rationally, such as to fight back or prevent further victimizing. This is why people are victimized in parking lots and garages since they are more focused on getting into their vehicles and getting home or to work.