iPads, Mercedes owners, and look to the sky. There's a word of wonder up there and, if you had yourself an SLK with the Magic Sky Control vario-roof, you could be looking at it. Well, of course, you could already be looking at the sky if you had an SLK because, you know, it's a convertible. But, let's say you want to do it without actually having to experience nature. Now we're talking. The vario-roof is a glass panel in the center of the SLK's retractable hardtop and now, if you tick the 2000 euro ($2,800) Magic Sky Control option, you can control that sky, tinting the glass panel at will by re-aligning the light-blocking crystals embedded within. It's like a big pixel on an LCD with the whole sun as your backlight and a truly awful dot pitch.