My buddy took out his Mustang 5.0 to a local track for some races. He said he got up to 130mph by the end of the straightaway. These were taken when he was at about the mid-point of the straightaway, so maybe around 90-100mph?
It was fun to practice panning with a rented D500 and 200-500mm lens.
DSC 1881 - f/9, 1/60 second, 360mm, ISO 100. This is my favorite because of the angle which seems to convey the action the best.
DSC 2892 and 2904 - f/11, 1/80 second, 200mm, ISO 100