Not everyone on here is retired and can travel at their leisure and stay in campgrounds. When we were working, we occasionally made some hard drives that had us driving until 8pm or 9pm. On occasion, we stopped at a Walmart or large parking lot of a closed business. At Walmart, we were always able to park so that the slide we were opening would open over a grassy area or island. This protected the slide from passing cars.
I think the OP could do something similar. My only concern is that his rig has a soft sided tent wall and would not provide much protection in a public area such as a Walmart.
We've also slept in Rest Area's years ago when we had no slides (slide in camper). Most Rest Areas say no overnight camping, but wouldn't typically enforce that if you didn't look like you were camping as in having your slides out.
