I have some tips of my own that might work better (for the victim, not for the perp)...
Robbery Prevention Tips:
* Stay alert
* Arm yourself
* Always carry a loaded weapon
* If approached by robber, fire every bullet at robber
Carjacking Prevention Tips:
* Stay alert
* Arm yourself
* Always carry a loaded weapon
* If approached by carjacker, fire every bullet at carjacker