Saw a similar thing at the Salmon Arm Fall Fair last month....only in slo-mo. This was a ramp wide enough for the vintage tractors to ride over, pivoted in the middle. The challenge for the driver was to stop in exactly the right place to be able to balance the ramp and tractor. Very entertaining.
PS. Until about ten years ago the motorcycle thing (with a slightly wider ramp) was part of the initial Skills Test hereabouts for novice riders.