Same as some above, I only hook to electric on a daily basis, water and sewer only as needed. Travel relatively light and keep organized to be ready to go in the morning. Just a few outdoor things to pack up. Would never tow a car, but maybe a boat is in my retirement plans. I like your idea on the car rental. That is a great option if you want to stay in place several days and set up a campsite. Campgrounds should even consider renting cars or brokering rental cars, if they do not already. Some campgrounds near cities might have shuttles to mass transit, and I know of one campground on the bus line to subway (Cherry Hill near DC). Car rentals are fairly affordable.