What 3 time champion podiumed at Mosport in 1981?
Bobby Rahal Robert Woodward "Bobby" Rahal (born January 10, 1953) is an American former auto racing driver and team owner. As a driver he won three championships and 24 races in the CART open-wheel series, including the 1986 Indianapolis 500. He also won the 2004 Indianapolis 500 as a team owner for the winning driver, Buddy Rice.
Graham Hill Norman Graham Hill {'1': ", '2': ", '3': ", '4': "} (15 February 1929 – 29 November 1975) was a British racing driver and team owner from England, who was twice Formula One World Champion. He is the only driver ever to win the Triple Crown of Motorsport—the 24 Hours of Le Mans, Indianapolis 500 and either the Monaco Grand Prix or the Formula One World Drivers' Championship. He also appeared on TV in the 1970s on a variety of non-sporting programmes including panel games. He liked painting in his spare time.