For starters, the side of the road is not where you have a "discussion" about whether your bus/RV is your home or a vehicle (yes in SOME states, but NO in others). This has been covered several times on the RV forums. Mostly because many RVer's pack guns. If you have TX plates, expect to be well searched if crossing onto Canada. Seems Canadians think all "Texans" carry guns. We have only been pulled over ONCE since we started RVing (as opposed to "camping"). I was in the Class C on a back road in South Georgia on our way to FL. Seems drug runners were buying older RVs, filling them with drugs and if pulled, would dump the RV. It did freak out the cop because David was following me aways back in a pickup truck pulling a 16 ft cargo trailer. Since I was pulled over, David pulled over as well. Cop was nice and explained why he pulled me. I did explain the truck that crawled up on his bumper was my hubby. Everything okay. I learned years ago to be super polite and say "sir" a lot. I think TX believes that your RV is your home. I know that the Escapees Club has lobbied for many years to get fulltiming RV's recognized as a "home". We have fulltimed since 2006 and haven't had a problem yet. But we also try to keep a low profile. No "wild" paint jobs, no bumper stickers that might make a cop pull us like "protected by Smith & Wesson", "legalize marijuana" "Veggie oil conversion" (did you pay road taxes on your veggie oil and do you have proof on you???), etc
We came out west (1700+ miles) no plates, no insurance, no problem (no yellow paint either and we pulled the flasher covers off). Never got so much as a second look. Only spent three nights in public campgrounds (2 nights in a TX COE, 1 night in a NM State/County park). All the other nights were spent in parking lots. No problems. And we weren't exactly what you would call "low profile".
Stacey even blatantly ran a traffic light in Tatum NM because she was plastered to my bumper (David was in the lead in the bus towing my Jeep, I was in the middle and Stacey was bringing up the rear in her Jeep pulling the untagged food cart... no tags needed in TN). And she made the left turn in front of a cop... he had to wait on her to clear the intersection.
IF we were to have something that we weren't supposed to have, like say, unregistered guns, I would make sure that they were well buried in the walls. or someplace. Not that we have unregistered guns. We spend far too much time in public campgrounds and we aren't supposed to have guns or any weapon in most parks we have been in. Certainly not unregistered guns.