package tray cardboard

Thanks guys,
I will look at it again. I already have the seats out of it. When I tug on the cardboard it seems to pull on the bottom of the headliner.....maybe it has just bonded to it over time...I will get a plastic scrapper and will try to separate where it touches the bottom of the headliner and see if in fact it will just slide out. I will report back with the results. Thanks!