Those are frame-grabs from the following two films that were shot at the Packard Proving Grounds in July 1929.
How Packard Proves a Packard, part 1
https://www.youtube.com/watch?v=eebr2aNK6B0
How Packard Proves a Packard, part 2
https://www.youtube.com/watch?v=K0vQYaYiAio
Bookmarks