Ever seen one of these crazy-looking boxes on top of a car and wondered what it was? Most likely, it's a Tepui tent. So what is that, exactly? It's a tent that lives on top of your vehicle until you need it. When you do, it deploys quickly, is incredibly spacious and comfortable, and proves bombproof against the elements. My 6-year-old daughter and I used the Autana SKY three-person just before Thanksgiving this past year for a couple of days on the Colorado River. It was a hoot. The built-in mattress kept in the heat, and the spacious A-frame set up allowed us to play board games late into the night. The company offers tons of tent styles and options past the base model tents. We were skeptical at first, but became true believers of the product by the end of the trip.