Mercedes-Benz 770 "Grand Mercedes", 1938-1942. When this imposing car was introduced at the Berlin Motor Show in 1938, there was no need to worry about its image – this had already been built by its predecessor. The technical highlights of this car, newly developed from the ground up, included an oval tubular frame, independent wheel suspension with coil springs at the front, a De Dion axle at the rear and a newly developed five-speed synchronized transmission. The car was powered by a supercharged eight-cylinder engine which developed 230 hp.