Sorry peter, you are wrong- all european 850's and S70's have folding rear
seats, I could go out to the garage and fold them in two cars which are sat
there!
If they didnt fold- you'd have no way to remove the parcel / hat shelf to
get at the speakers which are there!
Don't forget there are two red "dis-arm" tabs in the boot/trunk which need
to be flicked before the seat back release levers in the passenger
compartment will actually unlock the seat.
Tim..