If you don’t both anyone and lay low, the most trouble with the law you will likely get in is that they will tell you to move along. If you don’t do or keep anything illegal in your auto, you should be fine. I would say, “it is better to ask forgiveness , than to ask for permission” applies here.
If you’re not paying for something like a campsite like suggested above, you aren’t going to stay anywhere public too long. Friends with lots of land may let you stay for a while, but that will get old with them as well. Truck stops and highway rest stops will also work for short stays. A friend of mine stayed for a couple of weeks at the local highway rest stop while going ton school and never had a problem.
Another thing to consider is if a campsite will let you work off your stay. Facility and showers are a big plus.
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