[Mauzen]

You already have the biggest part

pawn Код:

public OnPlayerStateChange(playerid, oldstate, newstate)
{
    if(oldstate == PLAYER_STATE_ONFOOT && newstate == PLAYER_STATE_DRIVER)   //Equals "if player enters a vehicle as driver"
    {
        if (GetPlayerVehicleID(playerid) == 562)   //vehicleid is not provided, so get it like this
        {
            AddVehicleComponent(562, 1010); // Nitro
            SendClientMessage(playerid, 0xFFFFFFAA, "Nitro Added.");
        }
    }
    return 1;
}