by Alex Goy @A1GOYJanuary 1, 201412:01 PM PSTRoadshowNewsAuto TechThe XCAR review of 2013: July First up, the fearsome Audi RS 6. Now a look at the Mercedes SL -- has it outgrown its name? The Audi R8 is already brilliant, but adding more...everything in there makes it so very, very good. And now for something completely different: a buggy called RAGE. How's about off-roading, German style?