I am very surprised not to find this movie on the site. It takes place in 1937 and has plenty of fine examples of American automobiles of the era. Is it possible I just missed it somehow? I even used the “similar to” option on the search page and could not find any results.
Indeed it is not yet listed.
If you have the movie, you could make captures and submit them on the site?
(if you can't identify the vehicles it is not a problem)