We live on the East Coast — but last summer when we were in Jackson Hole WY we met a couple who did something like this! Recently retired. Sold their house (I can’t remember where they were from) and were driving from National Park to National Park, picking up jobs for a month or two and then moving on. When we met them, she was scooping ice cream and he was cooking hot dogs on the grill at The Creamery in Yellowstone.