Sec. 2. (a) Except as provided in sections 3.5 and 3.6 of this chapter, a civic event license plate issued under this chapter is supplemental to a license plate displayed on a vehicle otherwise registered or in the inventory of a dealer licensed under IC 9-32 or a manufacturer.
(b) Proof:
(1) of registration; or
(2) for a manufacturer or a dealer licensed under IC 9-32, of ownership;
must be in the vehicle at all times.