Not a one piece seamless looking thing from windshield all the way back. Actually, that may not be one piece, sure looks that way though.
Looks pretty much all glass to me.
http://media.freep.com/autoshow/2006/07ford_edge/0107ford_edge.jpg
Saflex(R) Interlayer Provides Heat Reduction And SPF 50 Benefits LOS ANGELES, and ST. LOUIS, Nov. 29 /PRNewswire-FirstCall/ -- The Giugiaro Mustang, a concept created by Fabrizio Giugiaro, Italdesign Giugiaro Styling Area Director, debuted at the Los Angeles Auto Show today with a spectacular and unique glass roof system that incorporates the vehicle's front window, panoramic roof and rear window as one solid glass unit. To achieve this dramatic look, Italdesign Giugiaro approached Saflex, a unit of Solutia Inc. (OTC Bulletin Board: SOLUQ), to develop a special glass roof for the Mustang by Giugiaro....