2007 MERCEDES BENZ S600 Engine Problems

IN REPEATED INCIDENTS, DEPRESSING THE ACCELERATOR IN MY 2007 MERCEDES BENZ S600 HAD NO EFFECT. I WAS, FOR EXAMPLE, LEFT ADRIFT IN HEAVY FREEWAY TRAFFIC, WITH SEMI-TRAILERS WHIZZING BY AND NO WAY TO ACCELERATE--PURE INERTIA WAS CARRYING THE CAR FORWARD. MERCEDES BENZ'S LARGEST NORTHERN CALIFORNIA DEALER, AUTOBAHN, WAS UNABLE TO FIX THE PROBLEM FOR MONTHS, EVEN AFTER ADVISING ME THAT THEY WERE "CONFIDENT" THAT THE PROBLEM HAD BEEN FIXED. I STILL DO NOT KNOW WHETHER THEY WERE ABLE TO FIX THE, AND THE FACT THAT THEY COULD NOT DETERMINE THEIR CAUSE GIVES RISE TO SUBSTANTIAL CONCERN THAT THE PROBLEM EXISTS IN OTHER S CLASS VEHICLES. THESE PROBLEMS RECURRED FOR MONTHS. THE FACT THAT NO ONE WAS KILLED OR INJURED IS JUST BLIND LUCK, AND ONE INCIDENT OCCURRED WITH MY TWO YOUNG CHILDREN IN THE CAR. ULTIMATELY MERCEDES BENZ REPURCHASED THE CAR AS A LEMON. I HAVE COPIES OF CORRESPONDENCE TO...