The first thing you have to know when you see this video is that no one was harmed.  The next thing you have to know is that this took place in California and it's a video of a stalled 18 wheeler that's on some train tracks and after a couple of seconds is destroyed by an oncoming train.

You have to be impressed by the sheer force of the train as it slices thru the 18 wheeler as it was nothing.  Oh and you have to admire the driver of the 18 wheeler because he tried to get the train to stop.

You can see the video below: