I used to drive a 98 Explorer. When i would move from apt to apt, i folded teh seats down and threw my twin sized mattress in the back. it fit perfectly. it was great! has anyone experienced fitting a twin sized mattress into the back of their 4Runner? i drive an '04 and have to go mattress shopping soon, so was just wondering if it will fit. i know i could just get a tape measure and go measure it, but im super bored at work rigth now and my car is all the way outside. any experience or knowledge? i could possible open up the rear window and hang the mattress out, but if i could lay it out inside completely that'd be better. thanks guys.