The long held belief has been that the cause of the pile up that killed Jarno Saarinen & Renzo Pasolini at the 1973 Italian Grand Prix was the oil deposited on the track by Walter Villa's Benelli in the previous race.
This writer proposes a different theory on the tragedy:
Paso's Harley Davidson seizedok ok ok...it was really an Aermacchi but bashing Harley's is politically correct.