Cal. Civ. Code § 2982.9

In the event a buyer obligates himself to purchase, or receive possession of, a motor vehicle pursuant to a contract or purchase order, and the seller knows that the buyer intends to obtain financing from a third party without the assistance of the seller, and the buyer is unable to obtain such financing, the contract or purchase order shall be deemed rescinded and all consideration thereupon shall be returned by the respective parties without demand.