[Calgon]

pawn Код:

public OnPlayerExitVehicle(playerid, vehicleid)
{
    if(PlayerInRace[playerid] == 1)
    {
        PutPlayerInVehicle(playerid, vehicleid, 0);
    }
    return 1;
}

You'll probably have another variable or something, you'll also want to verify that they're in the pit, mine simply slams them back in if a variable's value is 1.