Befriend the locals
If there's one thing every local despises, it's tourists—trust me on this (see: Bennys). But, if you are handsome, and charismatic, and have no semblance of shame, you can assimilate your way into local culture like Jane Goodall living with the gorillas.
Thrillist's Adam Lapetina recounts his own relevant experience: "We were in Yellowstone, without much of a plan. After watching Ol' Faithful erupt (it was spectacular!), we went inside the park's cafeteria for a quick nosh, where my friend quickly caught the eye of a young park employee. Their eyes met, sparks flew, and she ended up asking all of us to spend the night in the employee lodges. With sleeping bags in tow, and much to the distress of her employers, we spent the night. It was probably frowned upon, but it was fun—and free." Isn't that a fried slice of road trip gold?