I hear ya, what they forget on drafting is that lead Duck has added drag from the follower, does NOT help to have that second truck drafting except for that drafter. We went thru all this in the Glory Days of the Fuel Embargo of the late 70's. Trucks with shields, screens between truck and trailer, side panels and skirt curtains, even the trailer nose nacelles or tail shields, all that did little except to add weight. I can still remember the Rubber Band drive tag axles that were not all that good on the old trucks and the spring load tags or pushers added to grain trucks that ALMOST took load off the main axle unless you overloaded the crap out of them. Current idiot Herders on the highways have no clue how to soft foot, they are all in a hurry and trying to make that imaginary $65,000/year they were quoted as 'Potentially able to make'.
Better lighter alloys, better composites, better response electronics on the engines are delivering economy, not the bolt on or unbolted BS. I will always hold to K.I.S.S. systems.
