The intended final event, scheduled to be held in Fontana, California on November 9 was canceled due to wildfires, one of which was known as the "Grand Prix Fire", burning in and around San Bernardino County.
The Drivers' Champion was Paul Tracy. Rookie of the Year was Sébastien Bourdais. At the end of the season, the operations of a now bankrupt CART were assumed by Open-Wheel Racing Series, who continued to brand its top series as the Champ Car World Series.
With the departure of Honda and Toyota to the Indy Racing League (IRL) for the 2003 season, Cosworth became the exclusive engine supplier for the CART series. Their turbocharged 2.65L XFE V8 engine continued to be badged by Ford. Bridgestone continued on as the exclusive tire supplier for the series. Starting in 2003, CART began branding itself as the Champ Car World Series, and a marketing agreement between CART and the two suppliers resulted in the full branding of "Bridgestone Presents the Champ Car World Series Powered by Ford."[1]
With the departure of Honda and Toyota to the IRL for the 2003 season, four CART teams joined them in the rival series as well. Chip Ganassi Racing, Andretti Green Racing (a merger of the former Team Green and Michael Andretti's Team Motorola) and Mo Nunn Racing became full-time IRL competitors for the 2003 season. Meanwhile, Mi-Jack Conquest Racing went against flow and jumped from the IRL to CART.[2]Team Rahal and Fernández Racing split their efforts between the two series, each reducing their Champ Car teams to a single car. Dale Coyne Racing returned to full-time status after a partial season effort in 2002.
Familiar Champ Car drivers also found themselves in new surroundings for 2003. With Chip Ganassi Racing gone to the IRL, Bruno Junqueira took over the #1 car at Newman-Haas, replacing Cristiano da Matta who moved on to Formula One after winning the 2002 CART championship. With Team Green also gone to the IRL, Paul Tracy moved over to Team Player's. Tracy would reward his new team with the season championship. Alex Tagliani lost his Player's seat to Tracy but found a ride with the new Rocketsports Racing team. Champ Car's elder statesman Jimmy Vasser joined the new American Spirit Team Johansson team after Team Rahal downsized to a single car. His teammate there was series rookie Ryan Hunter-Reay. Herdez Competition tabbed veteran Roberto Moreno for their expanded two car team.
Sponsorship problems caused Yoong to lose his race seat to Champ Car veteran Gualter Salles at Milwaukee.[8] This marked Salles's first Champ Car start since Road America in August 2000.
Also at Laguna, the revolving door at Coyne continued with Geoff Boss taking over the #11 from Salles.[11]
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.[12]
PK Racing brought in Formula One veteran Mika Salo for the final four races of the year starting with the race in Denver.[13]
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.[14]
* 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.
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