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
1946 Indianapolis 500 Circle Piston Rings and Bill Slater served as the anchor. The broadcast feature live coverage of the start, the finish, and live updates throughout the race. 1946 Indianapolis 500 The 30th International 500-Mile Sweepstakes was held at the Indianapolis Motor Speedway on Thursday, May 30, 1946. This was the first Indianapolis 500 presided over by new track owner Tony Hulman. The track had closed in late 1941 due to World War II, and over the next four years, the facility fell into a terrible state of disrepair. Hulman purchased the Speedway in November 1945, and quickly went to work cleaning