YouTube – funny prank

So in this video, you have this minivan that has the floor cut out of it in the back. All the windows of the back or shaded so that you cannot see inside the van. There is no one sitting in the driver seat nor are they sitting in the passenger seat.
The people pushing the ban from the inside, keep moving the van in front of cars that are attempting to back out of a grocery store parking lot. Since the car is not running, the people don’t hear it, and basically start to go a little nuts.