A character in a chariot may issue or meet a challenge. He is considered to have stepped down from the chariot and the challenge is worked out as if the character was on foot. Any impact hits from the chariot are worked out against the unit rather than the character, as are the attacks of the creatures pulling the chariot and the rest of the crew; they are not part of the challenge. Only if the enemy character was on his own when the chariot charged are impact hits, crew and creature attacks worked against him.