This chapter does not apply to or affect:
I. A lien given by statute or rule of law to a supplier of services or materials for the vehicles;
II. A lien given by statute to the United States, this state or any political subdivision of this state;
III. A security interest in a vehicle created by a manufacturer or dealer who holds the vehicle for sale, but a buyer in the ordinary course of trade from the manufacturer or dealer takes free of the security interest.