[kaisersouse]

Might want to add

Код:

if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER) return 1;

Towards the top of onplayerkeystatechange so that anyone using NOS etc don't get penalized for "shooting"

I used GetPlayerState instead of IsPlayerInAnyVehicle because if you don't specify which seat position you could have drive-bys. The driver can still DB of course, so it might be worth removing weapons when a player enters the car.
Just some suggestions. Otherwise its a great idea.