This car was from the 1929 silent film titled "High Treason". Possibly one of the first specially built movie prop cars.
WOW!! What a weird, wild ride! I will have to look this movie up! I figured the 1966 was far from the first specially built prop vehicles, but while I've never gotten around to looking it up, I've always wondered what was the first and how far back the history of TV and movie custom cars went. It looks like it goes back further than I thought it did. Thanks for creating and sharing this!