Well, I didn't see this feature mentioned anywhere in this thread, so I apologize in advance if everyone already knows about it. On the roadster, if the top-down button is double-pressed quickly in the up direction, both windows roll up at the same time. Same for the down direction. If you have just raised your convertible top, you have a few seconds (15?) when you can raise both windows by pushing the up direction once on the convertible top control (the double-press feature also works).