I don't know if this is only in the P5 but why do the rear seats come out so easily. Not the backrest part that fold down but the butt part. There is nylon tab to pull and it pivots on a metal bar, you can then lift a yellow tab and slide the bar out of the metal frame. Is this only to allow the front seats to fold completely flat, which they do when you remove the head rests, or for the split folding rear seats to lay flat as well. I was hoping it was to gain acces to the secret 600hp switch under the rear seat.

 

Its so the back seats lay flat to put more cargo in. I saw something that looked like a secret switch but it was just nothing.

 

yeah, take the headrest off the rear seats and fold the butt part into the rear passenger foot wells. then fold down the back seats. Lots of nearly flat cargo space. I actually slept there twice before my sub was installed.

 

Same here in my sedan. Lots of room in there