The intense speed of the train made me question what we can and cannot control in this world. The train seemed right on the edge of being out of control or perhaps man's ability to control it. The actions of the engineers were deliberate and exact. I have not seen the movie yet, but based on the opening, I will be looking for the choices these individuals will be making to attempt to control the world around them and the actions they take that set things into motion (metaphorically represented by the train). Will their actions create a momentum that even they cannot stop?