§ 3928. Unauthorized use of automobiles and other vehicles. (a) Offense defined.--A person is guilty of a misdemeanor of the second degree if he operates the automobile, airplane, motorcycle, motorboat, or other motor-propelled vehicle of another without consent of the owner. (b) Defense.--It is a defense to prosecution under this section that the actor reasonably believed that the owner would have consented to the operation had he known of it. Cross References. Section 3928 is referred to in section 3903 of this title; section 5552 of Title 42 (Judiciary and Judicial Procedure).