I noticed these hook-like things behind the seat. It does not appear that they are in use for anything.
Yeah, kinda. Just not recessed like my wife's Edge. So I guess they would come in handy with the seatback down and hauling something?
Most car seats have an anchor that go up over the seat, that's where I hook the ones for my kids.I am not familiar with how child seats attach, but that sounds unlikely. There are three of them, and are directly behind where one would sit.
I use one of these for my dog's seatbeltThere should also be corresponding hooks where it hinges as well to hold the car seat down to the bottom of the vehicle seat.