Al Unser Sr. was a racing driver who became one of only four people to win the Indianapolis 500 four times.Unser came from a family of auto racers, known for their wins at the Pikes Peak International Hill Climb as well as at the Indianapolis 500. His brother, Bobby Unser (1934–2021), was the first in the family to win the Indy 500, but Unser followed him two years later with his first win in 1970.
