Cars roar at the start of the 500-mile Indianapolis classic, May 30, 1940. From left to right: Car no. 7, driven by Mauri Rose, who finished third; car no. 1, Wilbur Shaw, who came in first for the second consecutive year; and Rex Mays, car no. 33, who finished second. Shaw became the second driver in history to win the event three times. (AP Photo)