The 2003 IRL IndyCar Series season brought some of the biggest changes in its history. The league adopted the name IndyCar Series, after a settlement with CART prohibiting its use, had expired. Several former CART teams brought their full operations to the IRL, most notably major squads Chip Ganassi Racing and Andretti Green Racing, as well as former CART engine manufacturers Toyota and Honda, replacing Infiniti who shifted its efforts to the new feeder series Infiniti Pro Series. Many of the IRL's old guard including Robbie Buhl, Greg Ray, and Buddy Lazier had difficulty competing in this new manufacturer-driven landscape. The league, also added its first international race this year, taking over the CART date at Twin Ring Motegi. Taken from http://en.wikipedia.org/wiki/2003_IndyCar_Series_season.

The 2003 Bridgestone Presents the Champ Car World Series Powered by Ford season, the twenty-fifth and final in the CART era of American open wheel racing, consisted of 18 races, beginning in St. Petersburg, Florida on February 23 and concluding in Surfers Paradise, Queensland, Australia on October 26.
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 Bridgestone Presents the Champ Car World Series Powered by Ford 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 later rebranded themselves as the Champ Car World Series. Taken from http://en.wikipedia.org/wiki/2003_CART_season.

Race Results:

DATE	SERIES	Site	# of CARS	Winner	Started	Car	Miles	Pole Speed	Cautions	Caution Laps	Avg. Race Speed	LC	Time of Race
2/23/2003	CART	St. Petersburg	19	Paul Tracy	2	Lola / Ford	190	106.71	5	16	91.401	2	2:04
3/2/2003	IRL	Homestead	21	Scott Dixon	12	G/T/F	300	203.56	4	32	153.71	8	1:57
3/23/2003	CART	Monterrey	19	Paul Tracy	2	Lola / Ford	179	101.076	5	15	87.184	1	2:03
3/23/2003	IRL	Phoenix	22	Tony Kanaan	1	D/H/F	200	178.512	10	73	100.073	7	1:59
4/13/2003	CART	Long Beach	19	Paul Tracy	2	Lola / Ford	177	103.918	3	10	91.59	7	1:56
4/13/2003	IRL	Motegi	24	Scott Sharp	7	D/T/F	300		9	64	129.09	13	2:21
5/5/2003	CART	Brands Hatch	19	Sebastien Bourdais	2	Lola / Ford	197	115.96	2	6	105.412	3	1:51
5/11/2003	CART	Lausitz	19	Sebastien Bourdais	1	Lola / Ford	312	196.832	2	11	170.903	14	1:49
5/25/2003	IRL	Indianapolis	33	Gil de Ferran	10	G/T/F	500	231.725	9	49	156.291	14	3:11
5/31/2003	CART	Milwaukee	19	Michel Jourdain, Jr.	2	Lola / Ford	250		7	79	113.19	4	2:16
6/7/2003	IRL	Fort Worth	22	Al Unser, Jr.	7	D/T/F	300	219.3	4	31	168.213	5	1:43
6/15/2003	CART	Laguna Seca	19	Patrick Carpentier	1	Lola / Ford	195	115.8	1	1	107.986	0	1:48
6/15/2003	IRL	Pikes Peak	22	Scott Dixon	6	G/T/F	225		4	24	146.21	7	1:32
6/22/2003	CART	Portland	19	Adrian Fernandez	3	Lola / Ford	197	120.565	6	17	101.602	5	1:56
6/28/2003	IRL	Richmond	22	Scott Dixon	1	G/T/F	155		5	58	106.798	0	1:26
7/5/2003	CART	Cleveland	18	Sebastien Bourdais	1	Lola / Ford	242	130.686	4	10	117.315	3	2:03
7/6/2003	IRL	Kansas	22	Bryan Herta	11	D/H/F	300	218.085	3	28	167.57	10	1:48
7/13/2003	CART	Toronto	19	Paul Tracy	1	Lola / Ford	197	107.378	4	12	96.189	0	2:02
7/19/2003	IRL	Nashville	21	Gil de Ferran	4	D/T/F	267	206.211	8	56	137.679	10	1:53
7/27/2003	CART	Vancouver	17	Paul Tracy	1	Lola / Ford	178	105.236	3	11	90.632	4	1:57
7/27/2003	IRL	Michigan	21	Alex Barron	6	G/T/F	400	222.458	4	23	180.917	30	2:12
8/3/2003	CART	Elkhart Lake	19	Bruno Junqueira	1	Lola / Ford	138	140.524	3	15	86.493	0	1:35
8/10/2003	CART	Mid-Ohio	19	Paul Tracy	1	Lola / Ford	208	121.22	3	11	106.251	4	1:56
8/10/2003	IRL	Gateway	21	Helio Castroneves	1	D/T/F	250	175.965	4	35	135.286	5	1:50
8/17/2003	IRL	Kentucky	21	Sam Hornish, Jr.	1	D/C/F	300	219.614	1	10	197.897	9	1:29
8/24/2003	CART	Montreal	19	Michel Jourdain, Jr.	4	Lola / Ford	203	122.418	3	8	106.573	7	1:54
8/24/2003	IRL	Nazareth	21	Helio Castroneves	2	D/T/F	225	171.182	4	42	123.606	1	1:42
8/31/2003	CART	Denver	19	Bruno Junqueira	1	Lola / Ford	175	96.507	4	14	85.044	2	2:03
9/7/2003	IRL	Chicago	22	Sam Hornish, Jr.	5	D/C/F	300	223.159	3	22	184.294	20	1:38
9/21/2003	IRL	Fontana	22	Sam Hornish, Jr.	10	D/C/F	400	226.757	1	6	207.151	16	1:55
9/28/2003	CART	Bayfront	19	Mario Dominguez	8	Lola / Ford	155	93.553	6	36	75.533	6	2:03
10/12/2003	CART	Mexico City	20	Paul Tracy	1	Lola / Ford	195	112.893	4	9	100.133	2	1:56
10/12/2003	IRL	Fort Worth	22	Gil de Ferran	1	D/T/F	293	222.864	6	38	156.268	11	1:48
10/26/2003	CART	Queensland	19	Ryan Hunter-Reay	12	Reynard / Ford	131	109.706	9	20	91.718	3	1:49