I watched the making of Ronin, Robert De Niro says if you watch it again you can tell he was petrified and tried not to show it. From memory, for realism, the car the actors were in WAS the drive car but was stacked on top of the base chassis with a real stunt driver underneath driving and him pretending to drive at the same time on camera. I watched it again and laughed as it was so obvious when you knew but an awesome movie. Sadly it is one of those (few) movies that I just don't enjoy re-watching. Maybe because I loved it so much the first time.