Okay don't take my word for it, try the Roger Ebert review.
Transsiberian is the story of four people on a train. But this is an unusual train, the longest ride in the world for eight days from Beijing to Moscow. It is what Hitchcock would be making were he still alive and that is high praise indeed. which is to say no car chases or things that go boom, the suspense is mental and induced, not obvious and external. For me a big part of the movie is literally the experience of being on this train. The Lithuanian Film Group is credited with the work on the movie and it is clear they know their subject. Russia is a land of harsh climate and hard on its people, everyone looks old and tired, the victims of a hard life. The scenes of the train winding through miles of frozen Siberia indeed take us to another place. And when her husband does not get back on the train, we feel the utter isolation of an ordinary person lost in a very strange land.
At the Chinese Russia border the undercarriages (wheels) of the trains have to be switched. The Russian and Chinese track gauges are three inches different, gee what a difference three inches makes. This lack of coordination required an entire sequence of changing the wheels on the train, and enigines of course, every time the border is crossed.
so for something completely different, try Transsiberain, and be glad we live in San Antonio.