An advertising panel is disclosed which is a lightweight, portable, and foldable substrate which accepts and retains high quality graphics and photographic advertising images. The advertising panel can be used for providing advertising on the inner surface of the windshield of a vehicle. The advertising panel includes a substrate with an advertising image printed on the substrate and a light source. The light source illuminates the advertising panel from behind. A viewer exterior to the vehicle is able to see the advertising image at night because a portion of the light emitted from the light source is transmitted through both the advertising panel substrate and the advertising image.