You need to be familiar with the GE Roll Easy to understand this one, a true story from the 1950's or early '60's. Seems a Rexair/Rainbow salesman was demoing to a couple who had a Roll Easy. After doing the air wash segment of the demo, and showing how their vac spews filth into the air he said "You don't want this filthy thing in your house, do you?" or words to that effect, and, as was his custom, opened the door and tossed their vac, the Roll Easy out the door and onto the front porch. Seems the Roll Easy didn't stop there, though. It rolled off the porch and down the hill in front of their house, and on into the street, where a passing truck ran over it, destroying it. A shame to destroy an old vac, but a hilarious story.