1966 German Grand Prix had 30 drivers, one of whom is Jim Clark (a British Formula One racing driver ).
Jim Clark James Clark Jr. OBE (4 March 1936  7 April 1968) was a British Formula One racing driver from Scotland, who won two World Championships, in 1963 and 1965. 30 35 18 27 16 25 19 14 29 32 17 31 4 10 11 20 1 28 33 26 5 34 8 7 3 6 9 12 15 2 
