very early Hollywood camera car, 1920-1923 Packard third series twin-six, 12-cylinder, 90-horsepower, 136-inch wheelbase, special MGM camera car, filming "wind stuff" in Metro-Goldwyn-Mayer's "The Wind.""

 https://forums.aaca.org/topic/341211-period-images-to-relieve-some-of-the-stress/page/257