Building a van for humidity, levees and a 51-foot ferry
Humidity is the design problem. With 57.2 inches of rain a year and more than 60 thunderstorms at a typical station, ventilation, condensation control and drying space earn their keep every single day. Deep-cold insulation barely matters: Louisiana averages half a freezing day a year.
Length is the second problem, and it is measurable. A state park campsite takes one camping unit, defined as a motorised camper plus one additional vehicle. The Plaquemine ferry caps vehicles at 51 feet. Levee roads and gravel approaches to Corps primitive camps are narrow with soft shoulders, so overhang, turning circle and mirrors decide more here than ground clearance does.