I keep seeing this tray in European car based views.

I believe at 22:37 is where the gentleman in this German review lifts the rear carpet showing the tray. Now THAT is a Mod I would like to make on one.

https://www.youtube.com/watch?v=u9QhHb9RKFE

About 20 seconds later he folds the rear seat... is it just "me", or does it seem to fold "flat"? That was one of my nags about the Mirage when I took one out for a test drive, the seat was like a hill when folded flat. No hatch I have owned has done that; they all laid flat (79 Accord, 87 Chevrolet Sprint/Suzuki Forsa Turbo, 92 VW MK2 GTI 16v)