This video has quite the unique story attached to it. A family with no previous RV-building experience, took a RV frame and built a fifth wheel from the ground up. They take you through step-by-step in the process, showing you where they started and eventually what the fifth wheel looks like in the end:
Pretty neat video and I do believe that this constitutes an unusual RV because most people don’t make their own! If you don’t have time to make a homemade RV, but are looking for a new fifth wheel, check out this fifth wheel RV page.