Points are awarded for each pass, and usually, one driver prevails. Sometimes, the judges cannot agree, or cannot decide, or a crowd vocally disagrees with the judge's decision.[8] In such cases, more passes may be run until a winner is produced. On occasion, mechanical failure determines the battle's outcome, either during or preceding a heat. If a car cannot enter a tandem battle, the remaining entrant (who automatically advances) will give a solo demonstration pass. In the event of apparently close or tied runs, crowds often demonstrate their desire for another run with chants of 'one more time'.[9]