IsPlayerInVehicle wird so verwendet: http://wiki.sa-mp.com/wiki/Function:IsPlayerInVehicle
GF:
new bool:unbenutzt[MAX_VEHICLES];
for(new player=0; player<MAX_PLAYERS; player++) {
if(IsPlayerInAnyVehicle(player)) { unbenutzt[GetPlayerVehicleID(player)]=true; }
}
for(new car = 1; car <= MAX_VEHICLES; car++) {
if(!unbenutzt[car]) SetVehicleToRespawn(car);
}