(e) (1) It is an exception to the application of subsection (a) that a person is carrying or possessing a firearm or firearm ammunition in a motor vehicle if the person:
(A) Is not prohibited from possessing or receiving a firearm by 18 U.S.C. § 922(g) or purchasing a firearm by § 39-17-1316; and
(B) Is in lawful possession of the motor vehicle.
(2) As used in this subsection (e):
(A) "Motor vehicle" has the same meaning as defined in § 55-1-103;
(B) "Motor vehicle" does not include any motor vehicle that is:
(i) Owned or leased by a governmental or private entity that has adopted a written policy prohibiting firearms or ammunition not required for employment within such a motor vehicle; and
(ii) Provided by such entity to an employee for use during the course of employment.