I may try that sometime. I remember that was one of the sales pitch about my old Honda CR-V (97s-01s mine was an 00 and a 97). I tried it and by moving the front seat all the way forward, with the headrest still on the seat, it was a perfectly FLAT bed all the way to the back seat!
Tried it with my other cars and the other cars don't fold totally flat like the CR-V did lol