This is for the pre-93 cars. 

Everyone says, "There's a rubber strap to hold the cargo floor up."  True, there is, but what a pain in the butt to use.  Why not make a simple, automatic catch to hold the floor up?  Saab missed the boat on this one.

When the cargo floor is raised until it contacts the wedge, it slides up the ramp, then drops in behind the vertical face; the cargo floor now mercifully stays up and out of your way.  To lower, simply lift the package shelf about an inch and the floor will drop back down to where it normally lives.