Packard Co. file photograph of a 1928 Packard race car being checked out by three men, driver behind wheel. Inscribed on photo back: "Packard Motor Car Co. Proving Grounds 2.5 mile concrete speedway, Utica, Mich., inauguration ceremonies 14 June 1928; Leon Duray, 91-cubic inch front drive Miller special #4, set closed course one lap record of 148.17-mph, thus did proving ground track become the world's fastest speedway, a title held until the opening of Monza in Italy after WWII."
