[Jacob_Venturas]

pawn Код:

if(strcmp(cmd,"/setrentalcar",true)==0)//xkniives
  {
IsRentalVehicle[GetPlayerVehicleID(playerid)] = 1;
return 1;
}

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid)
{
 if(IsRentalVehicle[vehicleid] == 1)
{
///do something here
}
}

Don't copy and paste. I'm just giving you an idea of what you can do.