RSA 261:23: Certain Liens and Security Interests Not Affected.

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.