Mercedes v Auto Union. 1937 driver line-up. Bernd Rosemeyer and Ernst von Delius (Auto Union); Rudi Caracciola and Manfred von Brauchitz (Mercedes). The four drivers amassed a total of 29 GP wins. Bernd Rosemeyer (14 October 1909 - 28 January 1938) was a German racing driver and speed record holder. Ernst von Delius (29 March 1912 - 26 July 1937) was a racing driver from Germany. Otto Wilhelm Rudolf Caracciola (30 January 1901 - 28 September 1959) was a racing driver from Remagen, Germany. Manfred Georg Rudolf von Brauchitsch (15 August 1905 - 5 February 2003) was a German auto racing driver who drove for Mercedes-Benz