Hi! I am looking for some advice on inexpensive/free places to park my truck to sleep as I travel across the country this summer. I left Denver a month ago and am headed to the Jersey Shore via North Dakota, Minnesota, around the Great Lakes, down to Ohio, and through Pennsylvania. From Jersey headed back west through the Gulf. So far, I have been visiting family and friends but will be on my own soon as I enter the Lakes. My truck is set up for easy living but I am finding that even camp grounds can get pricey. While I am willing to pay for some of these grounds in cool areas, Im not planning on paying to sleep every night while on the road. I am a female traveling alone, so safe places to park are a must. Other than Walmart, are there other places that have worked of others?