This is sort of like the unofficial Triple Crown of Motorsports Plus One. The two most prestigious open wheel races and two most famous sports car races in the world at four venues with a great history.
So far my list has:
Michele Alboreto
Mario Andretti (even won the Daytona 500)
Michael Andretti
Raul Boesel
Sebastian Bourdais
Ronnie Bucknum
Jack Brabham
Eddie Cheever
Jim Clark
Derek Daly
Mark Donohue
Christian Fittipaldi
Masten Gregory
Dan Gurney
Denny Hulme
Stefan Johansson
Roberto Moreno
Clay Regazzoni
Peter Revson
Jochen Rindt
Eliseo Salazar
Vern Schuppan
Danny Sullivan
Justin Wilson
And need some help...
I do know that Phil Hill and Richie Ginther never competed in the Indy 500.
Graham Hill, who won the 24 hrs of Le Mans, the Indy 500 and Monaco GP, never competed at Daytona that I can find.
Edited by Joe Fan, 13 February 2013 - 19:58.