I just saw a news reports on how a Turkish prisoner escaped a German prison recently by hiding in a freight box!!!! The guy is still at-large. The article I read this in, alludes to the fact that the first recorded instance of this idea being used is in the Metal Gear video game series. I myself have played this game and it's base on stealth. The main character sometimes hides in a freight box, and moves along slowly, to avoid detection! Cool concept. It's even fun to do in the game. I just never thought that such a thing could ever work in real life!!! Who knew?