About Bobby Unser
Robert William Unser (February 20, 1934 – May 2, 2021) was an American automobile racer. At his induction into the Motorsports Hall of Fame of America in 1994, he had the fourth most IndyCar wins at 35 (behind his brother Al, A. J. Foyt, and Mario Andretti). Unser won the 1968 and 1974 United States Automobile Club (USAC) national championships. He won the Pikes Peak International Hill Climb overall title 10 times (13 times when class wins are included). Unser was the nephew of Louis Unser, brother of Al, Jerry Unser and Louie Unser, the father of Robby Unser and the uncle of Al Unser Jr. and Johnny Unser. The Unser family has won the Indianapolis 500 a record nine times, with Bobby and Al Unser Sr. being the only set of brothers to win in the race's history. Bobby Unser was one of ten drivers to have won the 500 three or more times and the first of two (followed by Rick Mears) to have won in three decades (1968, 1975, 1981).
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.