Those are pretty cool, I've seen them before and at one time considered getting one back when I had a larger bed truck. They seem to be very popular for those who do remote area camping. Glad you had a great time, the weather was awesome this past weekend where I live as well.
14Hemi..... It is a 2 person set up, and yes an air mattress...sleeps 2 people with lots of room.... usually once we are set we bike or kayak everywhere so the truck tent was the way to go... get up off the ground.