The term 'BIG NAME AT INDY' refers to two legendary drivers in the Indianapolis 500 race: Al Unser and Mario Andretti. Al Unser is a four-time winner of the Indy 500, having won in 1970, 1971, 1978, and 1987. He is also the only driver to have won the race in both turbocharged and normally aspirated cars. Mario Andretti is a three-time winner of the Indy 500, having won in 1969, 1975, and 1985. He is also the only driver to have won the Indy 500, the Daytona 500, and the Formula One World Championship. Both drivers are considered to be among the greatest drivers in the history of the sport.