A vehicle system includes a heads-up display device for use in a motor vehicle displays graphic elements in view of an occupant while the occupant views an environment through a display screen of the heads-up display device. The heads-up display device includes a projector configured to project a graphic element on the display screen through at least one reflector housed within a dashboard. The dashboard further houses an air duct for directing air flow within a passenger compartment. A light-transmitting section of the air duct is formed of a light-transmitting material adapted to allow light projected from the projector to pass therethrough.