A. The term “motor vehicle” as used in this act¹ shall mean every vehicle intended primarily for use and operation on the public highways, which is self-propelled; and every vehicle intended primarily for operation on the public highways which is not driven or propelled by its own power, but which is designed either to be attached to or become a part of a self-propelled vehicle; but not including farm tractors and other machines and tools used in the production, harvesting and care of farm products.

B. The term “antique, classic, or special interest automobile” as used in Section 918 of this title shall mean a motor vehicle which only travels on the highways of this state primarily for historical or exhibition purposes.