With the Maybach 57 and 62 sedans consigned to the history books, Mercedes announced the new W222 Mercedes S-Class - tipped to take a bow in May - would come with a Pullman limousine bodystyle to succeed those ill-fated models. And these exclusive spy shots are the first time the new extra-long model has been seen in prototype guise. Previous S-Class Pullmans were built to order, coming with the full-length three-box passenger compartments; the new model will be built in far higher volumes.

As the spy shots show, the Pullman will feature longer and wider B-pillars and longer rear doors, giving rear passengers extra legroom and owners more space in the trunk. The extended dimensions are apparent in the single spy shot of the Pullman next to the standard S-Class. It's said the prototype is as much as eight inches longer than the long-wheelbase S-Class. Aimed at the well-heeled and limo hire companies alike, the model will be a sure-fire hit in China where rich businessman prefer to lounge in the comfort of a luxury car's rear quarters instead of breaking a sweat behind the wheel.

The range-topping S600 Pullman will be powered by a 5.5-liter twin-turbo V12, with a V8 and possibly a plug-in hybrid also on offer, as come with all the new S-Class' latest gadgets. Expected to debut in spring 2014, the 2015 S Class Pullman will align itself with the new Bentley Flying Spur and Rolls-Royce Ghost, priced around the $200k mark.