“There’s a monster on this train that can only be seen by people about to die. If you do see it, you only have 66 seconds to live.”
Fun fact – the very first horror movie I ever saw was set on a train. 1970’s Horror Express is a chilling tale of a preserved prehistoric monster menacing the passengers of the Trans-Siberian Express (including, inevitably, Peter Cushing and Christopher Lee), in the early years of the 20th century. It’s not the best horror movie ever (and certainly not the most scientifically accurate), but it still works very well due in large part to that setting – a moving railway train on an epic, lengthy journey from which there is no escape when the monster comes for you.