1987 Indianapolis 500 Al Unser, Sr. held off Roberto Guerrero by 4.496 seconds, to win his record-tying fourth Indianapolis 500 victory. By leading the final 18 laps, Unser, Sr. tied the all-time record for most laps led in Indy 500 competition, and, at 47 years of age, also became the oldest winner of the 500. Mario Andretti's dominance of the month, and subsequent failure to achieve victory, was largely unprecedented in modern times. He led the practice speed chart on 11 of the 17 days (he participated in only 13 days), won the pole position, won the pit stop contest, had the fastest
1940 Indianapolis 500 1940 Indianapolis 500 The 28th International 500-Mile Sweepstakes Race was held at the Indianapolis Motor Speedway on May 30, 1940. The winner was Wilbur Shaw in the same Maserati 8CTF he had driven to victory in 1939. Shaw became the first driver in the history of the race to win in consecutive years. It also marked Shaw's third win in four years, making him the second three-time winner of the race. Shaw's average speed was , slowed by rain which caused the last 50 laps to be run under caution. Shaw took home $31,875 () in prize winnings, plus additional