Yes Marty, Americana covers a multitude of sins. My favorite in the genre, and at the top of my "in heavy rotation" is not even American: Po'Girl, a spin off of the also very nice Be Good Tonyas. But now we are *very* far from the Truckers.
Back to the van warrior rowdy theme: Lucero, out of Memphis (try "Nobody's Darlings"). Perhaps not up to standards of Truckers, and certainly not Uncle T, but very good.
I'll look for Cross Canadian Ragweed, jbc.
John