Sec. 601.194.  DEFENSE:  POSSESSION OF MOTOR VEHICLE FOR MAINTENANCE OR REPAIR.  It is a defense to prosecution of an offense under Section 601.191 that the motor vehicle operated by the person charged:
(1)  was in the possession of that person for the sole purpose of maintenance or repair;  and
(2)  was not owned in whole or in part by that person.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.