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So this isn't about our trucks, but I've seen some semi trucks with dual stacks with one that is sort of routed to the trailer. It's weird. The one stack sort of loops around into a flex hose that goes into the trailer- seems to usually be a loose material type trailer as opposed to a freight box. What's up with these?
Ah ha! I was figuring something like that. All about salvaging as much energy from the combustion cycle I guess. You make it, you might as well use it.
