[SmartTrucker]

The trucks are long haul so yes they are all outfitted with sleeper births.

We run the northwest states and have a licensed GVW of 98,000lbs stateside. But you are correct weight is almost always an issue. You are also correct about the wasted energy. There's a lot of excess heat from the engines and especially the exhaust. As well running the engine fan to keep things cool while pulling those hills is a drain on our horsepower. If we could collect energy from other sources otherwise wasted to power things like a guys fridge or that engine fan I'd think that would help but those are overhauls well beyond my means unless they are selling systems like that as kits.

We've thought about Tautliner trailers before but the cost outlay is much higher and they don't work with a lot of unload and reload situations that load with an overhead crane etc.

Also are trailers are flatdecks. If they were Vans I'd have some ideas far beyond what I've seen anywhere so far hehe. It would deal with the gap between the tractor and trailer