A reality check on some comments
Grand Prix is still one of the best example of racing as seen from the inside. ( AKA the pits ). I just watched it again to bring back all the memories, both good and bad when you live in a racing family.
Every car driver / pit crew member has a different way of coping with the physical and mental stress of competing at speed. That concentration can be very unpleasant to deal with just before and during the competition.
I did not see the improper " behavior " of any of the actors; these mannerism are often seen during the actual races while in the pits.
I was involved in unlimited sprint car racing. that meant injuries were common ( clay tracks have lots of dirt and rocks thrown around ) and up front death is seen too. I have participated and witnessed both; you don't get the shakes until later.
Our family has payed it's dues. Dad stopped driving and still competes as the owner of several fast midgets that can be seen at the Chili Bowl. He never misses it.