Wow, thanks so much! I suspected Stutz, because my dad -gone over 50 years now used to talk about a Stutz he had as a "kid" The film was shot at my great-grandfather's estate in Pelham NY, on Long Island sound. The estate is still there, well kept up and little changed, and a few years ago I saw from the road that even that garage still exists. The estate was sold back in 1956 or so.
Other than that, I guess my dad is about 24 in the picture. He worked on it himself, and told me he had tuned it carefully to get maximum MPG, 20 sticks in my mind. He went off to WWII, and left the car in that garage. After the war it was done, my g-grandmother had sold it for scrap to help the war effort. Here are a couple more images of vehicles in the film, maybe those might help date when it was actually taken?