Great question, and one I have been wondering about as well. By the looks of the back windows I would say they do not roll down but are a fixed pain... err, I mean pane...

[IMG]local://upfiles/748/A5833F1054704200BC91B8A9DC901AB2.jpg[/IMG]

They seem to have a huge black border around them as well to hide the B-pillar. [:'(]