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
1999 Indianapolis 500 three networks: ABC, ESPN, and ESPN2. At the track, several of the electronic dot matrix scoreboards were removed and replaced with four Daktronics ProStarä Video Plus screens and three Daktronics ProStarä large screens (one each inside the four turns, one each inside the two shortchutes, and one along the north end of the mainstretch). A year later, the project was completed, and an additional six Daktronics ProStarä video screens were installed along the inside and outside of the frontstretch. 1999 Indianapolis 500 The 83rd Indianapolis 500 was held at the Indianapolis Motor Speedway in Speedway, Indiana, on Sunday, May 30,