A slew of concept cars roll onto car show stands each year, but few earn the distinction of instant hit. The Mercedes-Benz "Vision CLS" prototype was just that kind of car. When it appeared at Frankfurt two years ago, it was one of those rare projects that evoke immediate public acclaim, and Mercedes had little choice but to respond to the clamor and turn it into a striking new addition to the stable of the three-pointed star: the CLS.The Mercedes-Benz CLS is based on the E-Class platform, but only about 35 percent of the car's components are shared with other models. There's a little SL thrown in and the rest is pulled from the company's extensive parts bins, but this is no cobbled-together "special" conspired one late night by a desperate marketing department. The CLS is not only a prime example of the company's technical acumen, but it has the looks to elevate it onto any list of the most beguiling Mercedes-Benzes ever crafted.Click here to read more