Lol, my tech school instructor showed my 4th year Automotive class this when I was at SAIT 21 years ago, and my 4th year Heavy Duty instructor showed it to my class 2 months ago. This one never gets old
On the anniversary, (40th?) they made a new video with the same guy for a trade show. It is even more informative and complete than the original. Apparently encabulation can be applied to all kinds of disciplines!!!