[Locky_]

Explanation of how it works:

we assume that the code OnPlayerWeaponShot, tire life of the vehicle so the shots hit.

Function is called when:
Shots with the player out of the vehicle;
Shots with the player as a passenger in any vehicle ..

If the player, you are in a vehicle, driving it, the script will not be called.

Sorry for my english.
If you do not understand, I do a very short video to show.