About the truck stops:I was thinkin the same thing.
There are hundreds if not thousands of Loves Travel centers around the south,, some have security, doubt if any would mind having a few extra visitors. Showers and "food" available too.
Get the hell out, you hard headed " I'm staying folks"
There are places you can hole up instead of going to what could be a hell hole shelter.
Just drive drive drive to safety and sleep in your car. Yep.