I don't know about falling off of a shelf... but I saw a couple of those 5 gallon plastic buckets fall off of the back of a truck going about 35 mph down the road!! A couple of years later the pale blue stains are still on the black asphalt!!
I'm just glad that I wasn't the first car behind the truck... and I know you're just glad they didn't call Cinderella to clean it up!