I've only seen one Ford GT on the road since it was in production. Had an elderly couple in it driving 30 MPH in a 40 zone, and slowed to 25MPH for a bend in the road.
Used to see this old man in a bright red Mitsubishi 3000GT VR4 that always drove AT LEAST 10-15 MPH under the speed limit.
Maybe he was the one in the GT!