Say what you will about the special effects of the 1970s, at least I was convinced I was looking at a real train. Think this through with me: Once you buy into the fact that the train is there, the train becomes a given. You're thinking, ohmigod, what's going to happen to the train? With modern CGI, there are scenes where a real train is obviously not on the screen, at least not in real time and space, and you're thinking, ohmigod, real trains can't go that fast. And when cars crash, cars should crash. They shouldn't behave like pinballs.