Some great solutions for a good nights sleep in the back of your SUV may actually be in your closet or basement right now. One of the best is a single sized futon pad. These roll-up nicely for transport and provide not only comfort but insulation on colder nights. Some campers like to use inflatable mattresses of various sizes, including the small inflatable models sold for hikers in most outfitter stores. Personally, I use a pad from a chaise lounge on my back deck. It folds well and is rugged enough for tough use. Also, the SUV makes a great base-camp for day-hikes or fishing expeditions. By using the SUV as a tent you don't need to carry a restrictive mummy bag if you don't wish. Break out the cotton sheets and sleep in comfort!