hi...
it has happened to me b4 too...
there is nothing wrong with it but usually this happens when u rev it in neutral...
never encountered it when rev till redline in gears....
http://img3.imagebanana.com/img/2i6stg5j/MB3501_1.jpg Agreed; the Mercedes-Benz S-Class is made like a tank, but one should not take that literally… This fella apparently felt like the king of the road...