About 20 years ago we camped during the winter for a few days at the Salton Sea, CA State Park. Each day about 10AM an older couple that looked to be in their '80s would pull in with one of those, park next to a palm tree and spend the day. They spent most of the day in their folding lawn chairs reading.
I don't know where they spent nights, but just figured they were local retired folks that enjoyed coming there when the weather was nice. Their rig was well kept, appeared fully functional and seemed ideal for their use.