A holding device attaches to the license plate screw bosses of a vehicle in the usual way and has a first receptacle with a first pair of slots for receiving a temporary driving tag and a second pair of slots, behind the first pair, for receiving an advertisement plate of the dealer. A second receptacle has an actuator that dispenses an information disc through a slot upon the depression of a switch. A delay circuit may provide a time delay between disc dispensing cycles. A lamp is controlled by a depression switch located within the first pair of slots so that a plate acts on the switch in order to illuminate the lamp for night test driving, which illumination may be overridden by a photoelectric cell for daytime use. Posts extend rearwardly of the second receptacle and have ears with openings through which screws pass and the screws received within the bosses. A stabilizer bar also extends rearwardly of the second receptacle.