Around the Corner (1937) How Differential Steering Works Found this while looking at some other cool old tech. It's educational, entertaining, and very vintage.
Little known fact: That last scene with the test drums on the rear wheels spawned the entire pro-street movement.
Very good video. Explains everything in a simple progression manner, very thorough. I wonder why they stopped doing stuff like this.
It seems like back then people wanted to know how it worked, and were impressed by features like a flat floor and lower ride height. Now they're looking for heated seats, cup holders, and how many TVs they can squeeze in to the interior.