Very true. My fiance's family has a trucking company and the pickins are slim. The best you could do now for a more aero truck is hope you know someone with some scrap sheet metal and a welder to test with.
And yeah, they're manly men who love their Harlies, red meat, and mass produced beer-like products. They're also not the brightest, but they're family so it's ok ;-)
You figure out how to quickly and cheaply retro-fit existing trucks to reduce fuel costs by even 5% and you'll have yourself "the better mousetrap" for which people will beat a path to your door.
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