In a proceeding brought against a motor sports operator or participant, in addition to the liability protections provided for under this article, a motor sports operator or participant may assert any and all common law, statutory, or other defenses that may be available. A motorsports operator may require participants to sign anticipatory release and waiver of liability forms as a condition of participating as a spectator or vehicle operator, which signed waiver forms shall be admissible at trial in any action for damages by or on behalf of the person who executed the forms.