The benchmark from which all other full-size luxury sedans are judged, the Mercedes-Benz S-Class was expected to debut at a special reception on May 15.
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Mercedes-Benz resuscitated the "four-door coupe" designation in 2005 with the introduction of the CLS-Class.
It should come as little surprise after last month's global reveal of the 2014 Mercedes-Benz S-Class, that the top-level high-performance variant AMG model would soon follow.
The Mercedes-Benz C63 Coupe Black Series is one of the most lusted-after supercars among Mercedes line.