Emerson Fittipaldi will be the race steward presiding alongside the three FIA officials at this weekend's Canadian grand prix.
63-year-old Brazilian Fittipaldi won his two F1 world championships in 1972 and 1974, before winning the Indy 500 twice and becoming the Indycar title holder in 1989.
In formula one, he won his first race during his rookie season for Lotus in 1970, and two years later become F1's youngest champion at 25.
In 1974 he moved to McLaren and won the title again, but then moved to his brother Wilson Fittipaldi's team and struggled.
He stopped driving in F1 at the end of 1980 at the age of 33, joining his brother in managing the team before it fell apart in late 1982.
Fittipaldi switched to American CART racing in 1984, winning the title in 1989 at the age of 43. At 47 he won the Indy 500 for the second time, but an injury ended his Champ Car career in 1996 when he was 50.
He was a Champ Car team owner in 2003 and recently the boss of the Brazilian A1 GP team.
Fittipaldi's nephew Christian drove in F1 for Minardi and Footwork between 1992-1994.