Or you can build a platform the same height as the 2nd row (back) fold down. Looks like what jamisobe has (or not?).in order to lay flat youd need to remove the 2nd and (remove or fold up) 3rd row seats. just folding up the 2nd row wont yield enough length. im 5'10" and had to sleep diagonally in the back with 2nd row folded.