Rick Mears' first Indy 500 victory out of four, in 1979, was the second for his car owner who has been a major figure in IndyCar ever since. Who is he?
1979 Indianapolis 500:  Second-year driver Rick Mears took the lead for the final time with 18 laps to go, and won his first of four Indianapolis 500 races. 1979 Indianapolis 500:  It was also Roger Penske's second Indy 500 victory as a car owner. Rick Mears:  He is one of three men to win the Indianapolis 500 four times (1979, 1984, 1988, 1991), and is the current record-holder for pole positions in the race with six (1979, 1982, 1986, 1988, 1989, 1991).
Roger Penske