Window technology has come a long way. I suppose that the wing window allowed you to direct air in the car while simultaneously allowing the main window to be rectangular for the ease of engineering the frame, handle, etc. Now that designers have figured out a way to make a not-rectangular window go into the door pocket, they have also figured out that one window is cheaper than two, and adios wing windows. Pity. They are groovy. We miss them. And we don't even smoke.