2003 Mario Andretti Grand Prix at Road America
The 2003 Mario Andretti Grand Prix at Road America was the twelfth round of the 2003 CART World Series season, held on August 3, 2003 at the Road America circuit in Elkhart Lake, Wisconsin.
The race was shortened to 34 laps from the scheduled 60 after the race was red-flagged twice because of rain. The first stoppage lasted 20 minutes after only 1 lap and the second lasted 2 hours and 40 minutes after lap 7. With darkness impending at the restart after the second red flag period, the race had to be shortened from its original length.
Race cancellation and rescheduling
This race was canceled in March 2003 after a legal dispute developed between the Road America's owner George Bruggenthies and CART. However, Mario Andretti was able to negotiate an agreement between the parties and the race was restored to CART's schedule in April. The race was then named in Andretti's honor.Qualifying results
| Pos | Nat | Name | Team | Qual 1 | Qual 2 | Best |
| 1 |  | Bruno Junqueira | Newman/Haas Racing | 1:43.917 | 1:43.703 | 1:43.703 |
| 2 |  | Sébastien Bourdais | Newman/Haas Racing | 1:44.722 | 1:44.242 | 1:44.242 |
| 3 |  | Patrick Carpentier | Team Player's | 1:44.814 | 1:44.306 | 1:44.306 |
| 4 |  | Oriol Servià | Patrick Racing | 1:45.654 | 1:44.314 | 1:44.314 |
| 5 |  | Mario Domínguez | Herdez Competition | 1:45.682 | 1:44.378 | 1:44.378 |
| 6 | | Paul Tracy | Team Player's | 1:44.725 | 1:44.519 | 1:44.519 |
| 7 |  | Jimmy Vasser | American Spirit Team Johansson | 1:45.098 | 1:44.545 | 1:44.545 |
| 8 | | Ryan Hunter-Reay | American Spirit Team Johansson | 1:45.442 | 1:44.551 | 1:44.551 |
| 9 | | Adrian Fernández | Fernández Racing | 1:44.735 | 1:44.620 | 1:44.620 |
| 10 | | Michel Jourdain, Jr. | Team Rahal | 1:45.188 | 1:44.752 | 1:44.752 |
| 11 |  | Tiago Monteiro | Fittipaldi-Dingman Racing | 1:45.715 | 1:44.778 | 1:44.778 |
| 12 | | Roberto Moreno | Herdez Competition | - | 1:45.021 | 1:45.021 |
| 13 | | Alex Tagliani | Rocketsports Racing | - | 1:45.044 | 1:45.044 |
| 14 |  | Darren Manning | Walker Racing | 1:45.076 | 1:45.583 | 1:45.076 |
| 15 | | Mario Haberfeld | Mi-Jack Conquest Racing | - | 1:45.173 | 1:45.173 |
| 16 |  | Max Papis | PK Racing | 1:46.681 | 1:45.728 | 1:45.728 |
| 17 | | Rodolfo Lavín | Walker Racing | 1:46.013 | 1:46.847 | 1:46.013 |
| 18 | | Gualter Salles | Dale Coyne Racing | 1:47.418 | 1:47.003 | 1:47.003 |
| 19 | | Geoff Boss | Dale Coyne Racing | 1:48.727 | 1:47.446 | 1:47.446 |
Race
| Pos | No | Driver | Team | Laps | Time/Retired | Grid | Points |
| 1 | 1 | Bruno Junqueira | Newman/Haas Racing | 34 | 1:35:28.491 | 1 | 23 |
| 2 | 2 | Sébastien Bourdais | Newman/Haas Racing | 34 | +0.703 secs | 2 | 16 |
| 3 | 33 | Alex Tagliani | Rocketsports Racing | 34 | +10.883 secs | 13 | 14 |
| 4 | 27 | Max Papis | PK Racing | 34 | +14.943 secs | 16 | 12 |
| 5 | 32 | Patrick Carpentier | Team Player's | 34 | +19.494 secs | 3 | 10 |
| 6 | 15 | Darren Manning | Walker Racing | 34 | +19.592 secs | 14 | 8 |
| 7 | 4 | Roberto Moreno | Herdez Competition | 34 | +21.298 secs | 12 | 6 |
| 8 | 34 | Mario Haberfeld | Mi-Jack Conquest Racing | 34 | +31.541 secs | 15 | 5 |
| 9 | 12 | Jimmy Vasser | American Spirit Team Johansson | 34 | +34.982 secs | 7 | 4 |
| 10 | 31 | Ryan Hunter-Reay | American Spirit Team Johansson | 34 | +41.025 secs | 8 | 3 |
| 11 | 19 | Gualter Salles | Dale Coyne Racing | 34 | +45.278 secs | 18 | 2 |
| 12 | 51 | Adrian Fernández | Fernández Racing | 34 | +59.576 secs | 9 | 1 |
| 13 | 11 | Geoff Boss | Dale Coyne Racing | 34 | +1:35.018 | 19 | 0 |
| 14 | 55 | Mario Domínguez | Herdez Competition | 18 | Off course | 5 | 0 |
| 15 | 3 | Paul Tracy | Team Player's | 10 | Contact | 6 | 0 |
| 16 | 9 | Michel Jourdain, Jr. | Team Rahal | 10 | Contact | 10 | 0 |
| 17 | 7 | Tiago Monteiro | Fittipaldi-Dingman Racing | 10 | Contact | 11 | 0 |
| 18 | 20 | Oriol Servià | Patrick Racing | 7 | Contact | 4 | 0 |
| 19 | 5 | Rodolfo Lavín | Walker Racing | 0 | Contact | 17 | 0 |