EV World published the article about bondo's Aerolid and boat tail box on John Gilkison's new F-150.It made it to press without some of the edits,but you'll get a sense of their performance in the real world.
Since John's trip,he's seen 28-mpg at 55-mph.Not too shabby for 36-sq-ft frontal area and 6,000-pounds.
Here's the link:
What A Difference Aerodynamics Makes - Part 2 : EVWORLD.COM