That doesn't mean one of the cars or part of the truck won't go through the cab of the train. I know I've said it before, that I used to date a woman who was a train driver. She said you have no idea what's going to happen. Will what you hit come up in the cab? Will the train derail and end up with all the railroad cars you were pulling now piling up on top of you? If the train is moving fast, there's still a lot of momentum left in it that will take some time to bleed off. Those can be some long seconds! It's not easy stopping a vehicle when its stopping distance is in miles, not feet. She once told me they're told to stay in the cab after a collision and radio it in. It isn't pleasant seeing what a few thousand tons of train can do to a minivan and the people inside of it.
I can pretty much guarantee the train will obliterate whatever it hits, but that doesn't mean it's indestructible, especially the crew compartment.
It's a job not unlike driving a heavy truck, which unfortunately requires you to rely on the diving skills of others - when most of them don't have those skills.