It would have been another way to prove that it didn't matter. The test was not for the distance to take off though. It just would have been nice if they did a measurement to see if there was any difference since the truck and the plane speed weren't the same throughout. Better yet, it would have been nice if they ran a second test dragging the tarp at a higher take off speed. I'm all about wanting to see all of the angles though no matter if I know I'm right or wrong.