Why wait for the Detroit Auto Show to see the 2010 Shelby GT500 when Ford's driving the thing around Detroit essentially undisguised? Jalopnik's Ben Wojdyla had the convertible version roll right up next to him at a stoplight in Royal Oak, which gave him the opening he needed to grab a bunch of good shots of the forthcoming snake. So, what's new? Well, obviously, the general 2010 Mustang cues all carry over to the range-topper, which also gets a good-looking set of alloys, huge grille openings up front, a heat extractor hood, and all the requisite badging. Ben says the GT500's gutsy exhaust note blended with a hint blower whine sounds as good as it did before. We're digging the black paint with Grabber Blue stripes, too. Ford drives the new GT500 onstage at Cobo in just over a month from now, and we'll be there, as usual. In the meantime, head over to Jalopnik for a full gallery showing the 2010 GT500 from a number of angles.