The box's lid is perforated to easily detach from the bottom, and it's scored into 4 square "plates" to serve your pizza on. Yeah, that's it - hey, I told you it was simple.
The design is still patent-pending, but until your local pizza shop starts offering the Green Box, why not bust out the box cutter and make your own? It'll save you a few paper plates or the effort of washing dishes, and is a handy recycle for otherwise non-recycleabe pizza boxes (the soaked-in grease and likely stuck-on toppings render pizza boxes unfit for most recycling programs).
Now, put your thinking cap on and come up with the next genius-but-obvious idea before someone else does!