1921 Indianapolis 500 1921 Indianapolis 500 The 9th International 500-Mile Sweepstakes Race was held at the Indianapolis Motor Speedway on Monday, May 30, 1921. Ralph DePalma dominated yet another early running of the 500, but again fails to win. He led 109 laps, and had a two-lap lead at the halfway point. A connecting rod broke, and he dropped out on lap 112. DePalma retires with one win, and 612 laps led in the "500." His laps led record would not be matched for 67 years until Al Unser, Sr. tied it in 1987. Tommy Milton won the first of two 500 victories.
1914 Indianapolis 500 Ray Harroun, who had won the inaugural Indianapolis 500 in 1911, designed the Maxwell car, and was given $10,000 () by the company's president as a reward for the cars qualifying with sub-1:37 times. By the end of the second day, 21 drivers had completed speed trials, and all but DePalma and Eddie Pullen had times below 1:45. Hughie Hughes's car suffered a broken crank case, preventing him from being able to set a qualifying time. On the final day of the trials, DePalma managed to make significant improvements in his Mercedes, and qualified with the twentieth fastest time overall,