I saw a rather hokey GM commercial last night for the new Duracrap... it was pulling a bunch of railroad cars down the tracks loaded with other trucks. It was a dually, with no guide wheels on it, and had just negotiated a sweeping turn.
Uh... no... sorry...
I can see it being able to pull the rr cars, the cars are all equipped with roller bearing trucks, (which by the way when Timken brought this out in the late 30's they had 4 girls in high heals pull a 200 ton steam engine in the terminal to show how little force was needed to make it move) which is hardly a feat for a truck... any truck, including a ranger! The question is how fast can it accelerate that load? Besides all this crap, how the heck does it stay on the rails without bogey wheels? It doesn't...
I will say this though. It was a very sharp looking truck, way better than what we're offering...