#Monococque

In 1959, David Peterson, a professional aircraft designer, had a dilemma: he owned a travel trailer and a boat, but couldn’t tow them both at the same time. He dreamed of putting an engine under the floor of the trailer, and towing his boat with it. When the Corvair appeared that year, he decided to act on it. He rented a large garage, tossed out the trailer, started from scratch, and four months later out rolled the first Ultra Van, weighing a mere 3,000 pounds. It was way ahead of its time then, and it still is today. Which probably explains why it was a commercial flop.