My initial thought was that the plane wouldn't be able to take off. If the conveyor is moving in the opposite direction as the plane, at the same speed, then the plane wouldn't move relative to the ground (as if you're running on a treadmill, you're not actually changing position relative to the room you're in) and therefore there would not be any more air flow over the wings than if it was sitting still, parked in one spot. (again, if you're running on a treadmill, you won't feel the breeze in your face that would be felt if you were actually running on the ground) Im also assuming you know the physics behind a plane taking off. However people in the comments section of the video said it was a stupid myth because the plane will "obviously" take off no matter how fast the conveyor is moving due to the plane being propelled by the propeller rather than the wheels. Can anyone explain how this works? My feeling is that it was tested incorrectly.