However, with the introduction of road courses in 2005 and a boost in prize money in 2006, drivers like Marco Andretti and Phil Giebler were attracted to compete in the Indy Lights championships part-time, expanding the field to twenty or more cars in every cars in 2007.
Marco Polo | Marco Stroppa | Mario Andretti | The Travels of Marco Polo | Marco Pierre White | Marco Antonio Muñiz | Marco Materazzi | Marco Delonge | Marco Borsato | Marco Rubio | Marco Polo Bridge Incident | Marco Island, Florida | Marco Island | Marco Ferreri | John Andretti | Piazza San Marco | Marco Barrientos | MARCO | San Marco Argentano | Michael Andretti | Marco Venturini | Marco Travaglio | Marco Simoncelli | Marco Pantani | Marco Pallis | Marco Huck | Marco Fu | Marco Follini | Marco Dorigo | Marco Doria |