I can honestly say I have never seen anything like this before; a transfer dump truck drag race. Standing still this 359 is an impressive setup but just wait till you see it action.
Did you catch that little trick when the driver had to back the truck closer to the trailer? Hitting a switch the truck moves backwards a few feet. The 359 is not running at this point so it must be some sort of electric motor. Pretty cool if you ask me. The tag trailer moves into the main trailer? What is this witchcraft?! This whole setup is alien to me as resident of the East Coast.