…The fuck?
Do you have any idea how difficult it would be to transport molten metal in a semi trailer? Jesus Christ, I don't even want to think about the ungodly setup you would need inside that trailer to maintain metal in a molten state.
I've delivered metal loads many times. I've hauled scrap, wire, and solid ingots. Never in my life have I even heard of anyone hauling molten metal. That's about the dumbest, least efficient, and most dangerous way to haul metal that I can imagine. It would literally be safer to haul radioactive aluminum.
So to answer your question…no, we do not do that.