And if you are serious about tracking the car, get a HANS device (I will bring mine over to show you when I get out there). Take a close look at the drivers face and its orientation in the helmet. That helmet will not be very helpful in preventing spinal damage if it is riding up like that!
I know that the helmet if mostly for the head, but if it can contort around the head like that it becomes a danger to the person wearing it. A HANS device will not only minimize neck injuries, but it also keeps the helmet in place as well.