This one is pretty good, its a "infomercial" from the 30's done by Chevrolet to explain differentials.
http://www.youtube.com/watch?v=K4JhruinbWc
Beats the heck out of those fancy high tech 3D animations.
http://www.youtube.com/watch?v=K4JhruinbWc
Beats the heck out of those fancy high tech 3D animations.
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