I've slept in the back of my truck a couple of times with the line-x. I usually just use my air mattress, though. I find it a lot nice than sleeping in a tent, especially around our parts with bears and such. You can get a cheap air mattress at Target or Wally World WITH a pump for about $30. I've had mine for 2 years now and still haven't had to patch it, lol.
2005 Chevy Silverado Base 4X4: 4.8L, Auto, 4 door ex cab, short box, AEM Brute Force CAI, Flowmaster 40 SI/DO, 285's on 17 inch Helo's Summer and 265's on 17 inch Devino's for winter, custom made center console, custom engine tunes, custom headache rack, Kobalt contractors tool box, color matched grille and sport mirrors, HD towing mirrors, no power options but I got A/C!
1992 Ford Ranger XLT 4X4: Needs a lot more done to it!