|This picture looks like it was taken at tech inspection in the Plaza, not approaching the start line (angle, available light).|
Either way, it's amazing that the organizers got through the event schedules on time.
They may be Lancia D 24's, not Ferraris, and it may be the Mille Miglia, not Monza. But the principle and the sentiment is the same. 540 is Eugenio Castellotti (DNF, "mechanical"), 602 is Alberto Ascari (won), 541 is Gino Valenzano (DNF, accident).