Championship Auto Racing Teams (CART) was a sanctioning body for American open-wheel car racing that operated from 1979 to 2003. It sanctioned the PPG Indy Car World Series from 1979 until dissolving after the 2003 season.
The United States Auto Club (USAC) is one of the sanctioning bodies of auto racing in the United States. From 1956 to 1979, USAC sanctioned the United States National Championship, and from 1956 to 1997 the organization sanctioned the Indianapolis 500. Today, USAC serves as the sanctioning body for a number of racing series, including the Silver Crown Series, National Sprint Cars, National Midgets, Speed2 Midget Series, .25 Midget Series, Stadium Super Trucks, and Pirelli World Challenge. Seven-time USAC champion Levi Jones is USAC's Competition Director.
American open-wheel car racing, also known as Indy car racing, is a category of professional automobile racing in the United States. As of 2022, the top-level American open-wheel racing championship is sanctioned by IndyCar.
The 1993 PPG Indy Car World Series season was the 15th national championship season of American open wheel racing sanctioned by CART under the name "IndyCar". The season consisted of 16 races. Nigel Mansell was the national champion as well as the Rookie of the Year. The 1993 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Emerson Fittipaldi won the Indy 500, his second career victory in that event.
The 1990 CART PPG Indy Car World Series season was the 12th national championship season of American open wheel racing sanctioned by CART. The season consisted of 16 races, and one non-points exhibition event. Al Unser Jr. was the national champion, and the rookie of the year was Eddie Cheever. The 1990 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Arie Luyendyk won the Indy 500, his first-ever victory in championship-level competition, and the fastest 500 until the 2013 Indianapolis 500.
The 1981 CART PPG Indy Car World Series season, the third in the CART era of U.S. open-wheel racing, consisted of 11 races, beginning in Avondale, Arizona on March 22 and concluding at the same location on October 31. The PPG Indy Car World Series Drivers' Champion was Rick Mears despite missing Round 2 at Milwaukee due to injuries sustained in the Indianapolis 500. Rookie of the Year was Bob Lazier. After the disagreement with the USAC during the previous season, the 65th Indianapolis 500 was not part of the Series, however no competing race was scheduled and most CART teams and drivers did take part.
The 1982 CART PPG Indy Car World Series season, the fourth in the CART era of U.S. open-wheel racing, consisted of 11 races, beginning in Avondale, Arizona on March 28 and concluding at the same location on November 6. The PPG Indy Car World Series Drivers' Champion was Rick Mears. Rookie of the Year was Bobby Rahal.
The 1983 CART PPG Indy Car World Series season was the 5th national championship season of American open wheel racing sanctioned by CART. The season consisted of 13 races. Al Unser was the national champion, and the rookie of the year was Teo Fabi. The 1983 Indianapolis 500 was sanctioned by USAC, but an arrangement was made such that it counted towards the CART points championship. Tom Sneva won the Indy 500, after three previous runner-up finishes.
The 1985 CART PPG Indy Car World Series season was the 7th national championship season of American open wheel racing sanctioned by CART. The season consisted of 15 races. Al Unser Sr. was the national champion, and the rookie of the year was Arie Luyendyk. The 1985 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Danny Sullivan won the Indy 500, in dramatic fashion, a race that became known as the "Spin and Win."
The 1986 CART PPG Indy Car World Series season was the 8th national championship season of American open wheel racing sanctioned by CART. The season consisted of 17 races, and one non-points exhibition event. Bobby Rahal was the national champion, and the rookie of the year was Chip Robinson. The 1986 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Bobby Rahal won the Indy 500, and would later become the first driver since 1980 to win Indy and the CART championship in the same season.
The 1988 CART PPG Indy Car World Series season was the 10th national championship season of American open wheel racing sanctioned by CART. The season consisted of 15 races, and one non-points exhibition event. Danny Sullivan was the national champion, winning for Team Penske. The rookie of the year was John Jones. The 1988 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Rick Mears won the Indy 500, his third victory at Indy.
The 1989 CART PPG Indy Car World Series season was the 11th national championship season of American open wheel racing sanctioned by CART. The season consisted of 15 races, and one non-points exhibition event. Emerson Fittipaldi was the national champion, and the rookie of the year was Bernard Jourdain. Fittipaldi became the second driver after Mario Andretti to win the Formula One World Championship and the CART championship.
The 1992 PPG Indy Car World Series season was the 14th national championship season of American open wheel racing sanctioned by CART. The season consisted of 16 races. Bobby Rahal was the national champion, his third and final career CART title. Stefan Johansson was named the Rookie of the Year. The 1992 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Al Unser Jr. won the Indy 500 in the closest finish in the history of that event.
The 1997 CART PPG World Series season was the nineteenth in the Championship Auto Racing Teams (CART) era of American open-wheel car racing. It consisted of 17 races, beginning in Homestead, Florida on March 2 and concluding in Fontana, California on September 28. The PPG CART World Series Drivers' Champion was Alex Zanardi. Rookie of the Year was Patrick Carpentier. Mercedes-Benz won their first and only CART engine-manufacturer's title.
The 1991 CART PPG Indy Car World Series season was the 13th national championship season of American open wheel racing sanctioned by CART. The season consisted of 17 races, and one non-points exhibition event. Michael Andretti was the national champion, and the rookie of the year was his younger brother Jeff Andretti.
The 1980 USAC Championship Car season consisted of five races, beginning in Ontario, California on April 13 and concluding in Lexington, Ohio on July 13. The USAC National Champion and Indianapolis 500 winner was Johnny Rutherford.
The 1981–82 USAC Championship Car season consisted of six races, beginning in Speedway, Indiana, on May 24, 1981, and concluding at the same location on May 30, 1982. The USAC National Champion was George Snider. The season included two Indianapolis 500 races. The 1981 winner was Bobby Unser, while the 1982 winner was Gordon Johncock. The schedule included dirt courses for the first time since 1970.
The 1982–83 USAC Championship Car season consisted of four races, beginning in Springfield, Illinois, on August 14, 1982, and concluding in Speedway, Indiana, on May 29, 1983. The USAC National Champion and Indianapolis 500 winner was Tom Sneva.
The 1983–84 USAC Championship Car season consisted of two races, beginning in Du Quoin, Illinois, on September 5, 1983, and concluding in Speedway, Indiana, on May 27, 1984. The USAC National Champion and Indianapolis 500 winner was Rick Mears. This was the last year that the Championship comprised more than one race.
INDYCAR, LLC, is an American-based auto racing sanctioning body for Indy car racing and other disciplines of open wheel car racing. The organization sanctions two racing series: the premier IndyCar Series with the Indianapolis 500 as its centerpiece, and the developmental series Indy NXT. IndyCar is recognized as a member organization of the FIA through ACCUS.
Mario Andretti 
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