As development for the new W140 S class was coming to an end in 1991, Mercedes had made an advertising campaign using a model car of a four-door Sauber C9 to entice new customers of what was to come. The campaign would focus on incorporating the known limousine with the previously unattainable sporty driving capabilities that are now synonymous with large luxury German flagships. 

This new generation of S Class was Bruno Sacco’s (design director for MB) direct response to the new Lexus LS which was eating up German flagship sales, as it was providing a better experience all around for a fraction of the price. The W126 had been on sale for almost a decade at that point, and the new W140 could not rely on its reputation as the highest echelon of executive vehicles. The S Class would need to provide everything all other cars could, no matter the cost. This included the spirited driving capabilities you would expect from the car world leaders would be seen in. 

The model car was only made to entice the imagination of the new S class, as it was never supposed to be an accurate representation. With this in mind, it is unknown how this body kit on a W126 came to be. More likely made by a dealer than a factory-endorsed venture, few pictures of this frankenstein are available on the internet. The proportions of the model car and the car at the dealer showroom are way off, you can tell by the long hood that houses the presumably original engine, and the gap between the rear fender and the rear door. The only parts which are assumed taken from the Group C car are the rear spoiler (noticeably wider than the rest of the car) and the center lock wheels. The windshield wiper has also been mounted in the middle to mimic the racer.

 The car's history is unknown, and its time in the public eye is a mystery. Rumors have it that it was dismantled over the coming years.