The version I’ve been told of its origins: Several years ago, Rockwell International decided to get into the heavy duty transmission business. They were getting ready to tape a first introduction video, so, as a warm up and sound-check, the professional narrator began ad-libbing what has become a legend within the trucking industry. This man should have won an Emmy for his stellar performance. Now remember this is strictly off the cuff, nothing is written down.
Cats in weightlessness - I think the comment sums it up perfectly - “What was the the point of this experiment? Confirming that weightless cats are indeed, hilarious?” Yes, yes they are.