Champ Car veteran Gualter Salles at Milwaukee. This marked Salles's first Champ Car start since Road America in August 2000. After a series of disappointing results to open the season, PK Racing replaced Patrick Lemarié with noted Laguna Seca expert Brian Herta for the race there. Herta's full-time job in 2003 was driving in the IRL for Andretti Green Racing so Max Papis took over the car starting with the following round at Portland. Also at Laguna, the revolving door at Coyne continued with Geoff Boss taking over the #11 from Salles. The shuffle at Coyne did not stop at Portland as Gualter Salles returned, taking over the #19 car from Joël Camathias. Salles remained in the #19 for the rest of the year with two exceptions: Alex Sperafico took over the car at Toronto and Miami because Salles had previous commitments those weekends. PK Racing brought in Formula One veteran Mika Salo for the final four races of the year starting with the race in Denver. Two extra Mexican drivers were brought in for the race in Mexico City. Herdez Competition gave away Roberto Moreno's car to Roberto González for the race, while Walker Racing ran a third car for Luis Díaz. Season summary Schedule Oval/Speedway Dedicated road course Temporary street circuit Race results Final driver standings Nation's Cup Top result per race counts towards Nation's Cup. Chassis Constructor's Cup Driver breakdown * Alex Tagliani started on pole at Milwaukee but was not awarded the bonus point for it when the qualification session was rained out. The grid was set by practice times. This result is not counted in Tagliani's season total in this table. See also 2003 Toyota Atlantic Championship season 2003 Indianapolis 500 2003 IndyCar Series 2003 Infiniti Pro Series season Notes References Champ Car seasons CART CART CART