When you pull the plastic tab you should press to the rear of the car and lift the coushin. This way of removing the lower cusin on cars is pretty normal. As for the actual usefullness of this as additional cargo room. It still doesn't make the rear seat fold down. You still have to remove the two nuts on the back cushin and take that out of the car to make the hole. I am thinking about swapping that pad w/ one that folds down.