aero transport !!!

[royanddoreen]

Boat Tail Reduces Truck Fuel Consumption By 7.5 PercentScienceDaily (Nov. 5, 2009) — A boat tail, a tapering protrusion mounted on the rear of a truck, leads to fuel savings of 7.5 percent. This is due to dramatically-improved aerodynamics, as shown by road tests conducted by the Dutch PART (Platform for Aerodynamic Road

[ecomodded]

We may well be seeing these semi trailers being manufactured with the boat tail built into the rear. Perhaps a hydraulic boat tail that can expand and contract as needed to accommodate the loading dock and various loads.
A fleet of boat tailed trailers would provide a distinct advantage to the Company using them. 7% of a semi's yearly fuel bill is large.

[ratherbehiking]

I have seen several of this type of tail already in use. The other day I even saw a fully tricked out rig with side skirts, boat tail, and smooth wheel covers! the tails I have seen a about half the length though so probably not 7.5% gain

[RobbMeeX]

Yup, the first time I saw one, I mashed the gas to check it out. Ecofail. :-p