The city shall have a lien on all motor vehicles taken into custody for the actual towing expense, storage charges, and service fee as provided in Section 28-4 of this code and for an administrative fee of $150, plus any reasonable attorney’s expenses, if the motor vehicle is processed for auctioning. This lien is superior to all other liens and claims except liens for ad valorem taxes and may be satisfied by sale of the motor vehicle. (Ord. Nos. 15519; 16287; 17547; 19312; 19742)