I camped out in mine in the mtns of Taos last week. I used an airmattress with the seats up and forward. I woke up car covered in snow and a little cold from the airmattress, but other than that it was great. I turned the car on and cranked the heat and was ready to go. On the way back to Texas I put down the passenger front and back seats. I am 6'4" and fit great. I put a big thermarest and sleeping bag on top with a blanket and slept for 3 hours. Have NEVER done that before. I can't wait until my next roadtrip. 8)