There are different height mounts. Flip ups are also an option. My son's I built with just red dot. Keeping extra batteries good idea I have gone to shoot and be dead battery
We hog tie TN Williams and Widder, put them in room with rubber walls and then hang a nanner split just out of reach. I would love seeing them squirming trying to get at it.
Since you didn't see person in car he could have been someone that has earned the salute. Otherwise the hand gesture to pass looks similar to a salute but closer to chest level.