Aerodynamic Heavy-Duty Truck Trailer Cuts Fuel Consumption and Emissions By Up to 15%

[FastTrack]

This thing gets over 5% savings and it automatically delpoys at highway speeds, and stows itself before you get to the loading dock so you can open the doors like its not even there.ATS Aerodynamic Trailer Systems - SmartTail and WindTamer products to reduce aerodynamic drag

[kach22i]

Cool, looks something like a hovercraft skirt.