Anybody know when this requirement started? I was looking through the design studio tonight and noticed it, but I don't do that often so I don't know when it started. Why would they do this? I never want a sunroof in my car just because of the potential for problems. But XM satellite radio is one of the most important features of the car to me. For once I'm glad I bought my car when I did!!! Yeah!! Sad for future owners who don't want a sunroof but require satellite radio. I wonder what percentage of owners feel XM is mandatory in any car (like me)? I can't imagine a long drive without XM.