If you search on YouTube long enough you'll be able to find almost anything. Several years ago there was a video circulating of some vintage 911s undergoing what was dubbed as 'spin testing.' It was a short clip, but it was entertaining at the time and we knew their had to be more. A few minutes with the search bar at everyone's favorite streaming video site and presto! Not only did we find the original video, but also a series of other clips that go over everything from manufacturing to testing to racing the iconic rear-engine German.
The seven clips we were able find are after the jump, in all their late 60s, early 70s glory. Anyone who knows the origins of these clips, let us know in 'comments.'