An accessory system of a vehicle includes a rearward viewing camera, a forward viewing camera and a video display screen disposed in the interior cabin of the vehicle at a location separate from the location of an interior rearview mirror assembly. When the vehicle is executing a reversing maneuver, the video display screen displays images captured by the rearward viewing camera to assist the driver in reversing the vehicle. The video display screen is operable to display other information. During forward travel of the vehicle and responsive to information pertaining to the location of the vehicle and a route to a destination, the video display screen displays forward video images captured by the forward viewing camera and the video display screen displays a graphic overlay on the displayed forward video images that highlights a highway on/off ramp to follow the route to the destination and/or a building of the destination.