The Doubleback Van is a converted Volkswagen Transporter that not only pops up like a traditional campervan, it expands out the back too. Here is video of the electrical mechanism in action. The Doubleback is pretty slick and all, but it’s $87,000. For my next Bigfoot expedition, I’d be happier hopping in our Jason’s new old 1987 Westy. (More on that once the renovations commence.)