Headlined by the offering of the John Atzbach Shelby collection, the 2020 Indy auction was not only a historic event for Mecum, but it also added to the history books for the Ford Mustang, as 5R002—the 1965 Shelby GT350R Prototype (Lot F140) from the Atzbach stables—became the world’s most valuable Mustang ever sold. Demanding a final sale price of $3.85 million, the car exists as the first Shelby R-Model competition car built and the first Shelby Mustang to win a race, easily qualifying it as the most historically significant Shelby Mustang in the world; its record-setting sale in Indy marked yet another first-place finish for The Ken Miles “Flying Mustang” as it eclipsed the world-record sale price of the original McQueen “Bullitt” Mustang sold by Mecum just six months ago.