This video clip provides very little information as to its purpose, and its title's in Russian, so I'm not sure precisely what's going on. I think it's a series of tests of what happens when a train impacts vehicles and loads of various kinds, to see how they react and what sort of penetration of the train/engine takes place. The music is ghastly, but the images are certainly interesting. I suggest watching it in full-screen mode, with the sound turned off.
Some pretty impressive impacts there . . .