The car is an Alfa Romeo 6 C 2500, driven by its owner, Mr. Christoforetti from St. Wolfgang, Austria, at the Internationales Motorrad- und Nationales Auto-Straßen-Rennen der ARBÖ-Kraftfahrer-Ortsgruppe Salzburg on May, 1, 1952, at the Autobahn Salzburg-Liefering.