Racecar legend Al Unser, a four-time winner of the Indy 500, died Thursday at the age of 82 at his home in Chama, New Mexico, after a 17-year battle with cancer, the Indianapolis Motor Speedway announced Friday.

Unser, who was the oldest person to win the Indy 500, is survived by his wife, Susan, who was with him when he died, and his son, Al Unser Jr., who won the Indy 500 twice. He is the only driver in history to have both a sibling and son win Indianapolis’s most famous race.