John, you're wildly optimistic on the mpg of the OTR trucks. More like 6-7 mpg is the average, so anything that they can do to eke out even another 1/2 mpg (stuff like trailer skirts, and cab fairings) pays back. I have to agree that for a Stovebolt, it's not going to help much.
Even reducing splash (most stay off the roads with their babies when it rains, right) probably isn't much help, as it makes it harder to wash the crud that would still get above the splash shields.
