California Code, Vehicle Code - VEH § 10854

Every person having the storage, care, safe-keeping, custody, or possession of any vehicle of a type subject to registration under this code who, without the consent of the owner, takes, hires, runs, drives, or uses the vehicle or who takes or removes any part thereof is guilty of a misdemeanor and upon conviction shall be punished by a fine of not exceeding one thousand dollars ($1,000) or by imprisonment in the county jail for not exceeding one year or by both.