[WonkeyMonkey]

Almost all of these old automobile advertisements are worth a watch. My favorite are some of the old Chevy information/ads especially this one:

https://youtu.be/uoA-2TlZY5I

Useful because a lot of the basics explained give a good idea of the technology in modern cars, and it is also entertaining to see how far we have come over the many years.

[Sukotto]

My favorite: "How Differential Gear works" (1930s)

https://www.youtube.com/watch?v=K4JhruinbWc&t=1m50s