It's extremely regional, apparently. For example, I'm in New Orleans and I've found it in Jackson, Mississippi, just outside Mobile and in Gulf Shores, Alabama. Also spotted it in Atlanta.
I'll occasionally make a little day trip out of it on a lazy Sunday or if I go up to Pearl to catch the Braves' AA team and grab a few 12-packs.
That's...a bit outside of a Sunday drive for me unfortunately. AA Braves does sound like a decent excuse though...