Sorry, not from that area.
Around here, our normal mobile kitchen unit works fine, as long as we follow any city or county ordinances (permits, etc...) In our city we can set up on private property without any sort of a permit.
I gotta say though, I love the taste of roadside BBQ. I would love to do a roadside BBQ trip someday. Last summer I had some in Georgia and Alabama. Great stuff. The Alabama one I remember was called "The Georgia Pit" (yes it was in bama) It was at a gas station. Smoked with Pecan, and it was amazing. I bought some extra, packed it in the cooler until we got all the way back to Iowa.