my 1995 SL500 does this as well. haha. not a secret or new really.Not sure if others have seen this, but if you swing the driver/passenger side sun visor over to the side-window position, you can actually slide the shade out to cover different parts of the driver's or passenger's window... very handy feature!
What will be more interesting is what you have to say about it months down the road since it will be the things that really stick that come out in what you say here. Usually those little things get old real quick, to me at least.Ah yes... so you can tell I'm new to MB and their features.