Pratt Miller Engineering, formerly known as Pratt & Miller, is an American company involved in the automotive and arms industries. It was founded by Gary Pratt and Jim Miller in 1989. A defense division was added in 2013 and the company was acquired by Oshkosh Corporation in 2020. The company is headquartered in the unincorporated community of New Hudson, in Lyon Township, Oakland County, Michigan. They are best known as service providers for many of General Motors' motorsports programs, including the operation of the Corvette Racing team and their own Pratt Miller Motorsports.
The 2014 United SportsCar Championship was the inaugural season of the International Motor Sports Association's new series created out of a merger of the Rolex Sports Car Series and the American Le Mans Series and the first to be held under the name as the United SportsCar Championship. It began with the 24 Hours of Daytona, the first time since the 1997 IMSA GT Championship season that IMSA sanctioned an event at Daytona International Speedway on 25 January and ended on 4 October at Petit Le Mans. It was the 44th overall season of IMSA GT championship racing tracing its lineage to the 1971 IMSA GT Championship.
The 2015 United SportsCar Championship was the second season of the International Motor Sports Association's United SportsCar Championship and the last to be held under that name. It was also the 45th overall season of the IMSA GT championship tracing its lineage to the 1971 IMSA season. It began on January 24 with the 24 Hours of Daytona. and ended on October 3 at Petit Le Mans.
The 55th Rolex 24 at Daytona was an International Motor Sports Association (IMSA)-sanctioned 24-hour automobile endurance race for prototype and grand touring sports cars held at the Daytona International Speedway combined road course in Daytona Beach, Florida, from January 28 to 29, 2017. It was the first of twelve events in the 2017 IMSA SportsCar Championship, the 55th 24 Hours of Daytona, and the first in the four-round North American Endurance Cup.
The 65th Mobil 1 12 Hours of Sebring fueled by Fresh from Florida was an endurance sports car racing event held at Sebring International Raceway near Sebring, Florida from 16 to 18 March 2017. The race was the second round of the 2017 WeatherTech SportsCar Championship, as well as the second round of the North American Endurance Cup.
The 2018 IMSA SportsCar Championship was the 48th motor racing championship sanctioned by the International Motor Sports Association (IMSA). It was the fifth season of the United SportsCar Championship and third to be held under the name as the IMSA SportsCar Championship. It began on January 27 with the 24 Hours of Daytona, and ended on October 13 with the Petit Le Mans.
The 2019 24 Hours of Daytona was an International Motor Sports Association (IMSA)-sanctioned endurance sports car race held at the Daytona International Speedway combined road course in Daytona Beach, Florida, on January 26–27, 2019. It was the 57th running of the race, and the first of 12 races in the 2019 IMSA WeatherTech Sportscar Championship, and the first of four rounds of the 2019 Michelin Endurance Cup.
The 67th Mobil 1 Twelve Hours of Sebring Presented by Advance Auto Parts was an endurance sports car racing event held at Sebring International Raceway near Sebring, Florida, from 14–16 March 2019. The race was the second round of the 2019 WeatherTech SportsCar Championship, as well as the second round of the Michelin Endurance Cup. Action Express Racing and Wayne Taylor Racing brought home a Cadillac 1-2-3 finish for the overall honours, with the win going to the No. 31 crew of Eric Curran, Felipe Nasr and Pipo Derani, who won the 12 Hour race for a third time in the previous four editions. the #911 Porsche GT Team won in the GTLM class over the No. 66 Ford GT of Chip Ganassi Racing, LMP2 was won by Performance Tech Motorsports, and the Grasser Racing Team took a second straight victory in the GTD class, winning over fellow Lamborghini GTD team Magnus Racing, who came 2nd in only their second start as a Lamborghini team.
The 2019 BUBBA Burger Sports Car Grand Prix was a sports car race sanctioned by the International Motor Sports Association (IMSA). It was held at Long Beach street circuit in Long Beach, California on 13 April 2019. The race was the third round of the 2019 WeatherTech SportsCar Championship.
The 2019 Sahlen's Six Hours of the Glen was an endurance race sanctioned by the International Motor Sports Association (IMSA). The race was held at Watkins Glen International in Watkins Glen, New York, on June 30, 2019. This race was the sixth round of the 2019 WeatherTech SportsCar Championship, as well as the third round of the 2019 Michelin Endurance Cup.
The 2019 Road Race Showcase at Road America was a sports car race sanctioned by the International Motor Sports Association (IMSA). The race was held at Road America in Elkhart Lake, Wisconsin on August 4, 2019, as the ninth round of the 2019 WeatherTech SportsCar Championship, and the fifth round of the 2019 WeatherTech Sprint Cup.
The 2020 IMSA SportsCar Championship was the 50th racing season sanctioned by the International Motor Sports Association (IMSA). This was also the seventh United SportsCar Championship season and fifth under the name as the IMSA SportsCar Championship. The series began on January 25 with the 24 Hours of Daytona, and ended on November 14 with the 12 Hours of Sebring.
The 2021 IMSA SportsCar Championship was the 51st racing season sanctioned by the International Motor Sports Association (IMSA) which traces its lineage back to the 1971 IMSA GT Championship. This was also the eighth United SportsCar Championship season and sixth under the IMSA SportsCar Championship name. The series began on January 30 with the 24 Hours of Daytona, and ended on November 13 with the Petit Le Mans after 12 races.
The 2020 Petit Le Mans was the 23rd running of the Petit Le Mans, and was held on October 17, 2020. It was the 9th race in the 2020 IMSA WeatherTech Sportscar Championship, and the 3rd race of the 2020 Michelin Endurance Cup, and was run at Road Atlanta in Braselton, Georgia. The race was won overall by the #10 Konica Minolta Cadillac Cadillac DPi-V.R after the #7 Acura Team Penske and #31 Whelen Engineering Racing entries made contact and spun out in the closing minutes of the race.
The 2021 12 Hours of Sebring was an endurance sports car race held at Sebring International Raceway near Sebring, Florida from 17 to 20 March 2021. It was the second round of both the 2021 WeatherTech SportsCar Championship and the Michelin Endurance Cup. Mazda Motorsports entered as the defending overall winners of the 12-hour event.
The 2022 IMSA SportsCar Championship was the 52nd racing season sanctioned by the International Motor Sports Association (IMSA), which traces its lineage back to the 1971 IMSA GT Championship. This was also the ninth season of the IMSA SportsCar Championship since the merger between the American Le Mans Series and the Rolex Sports Car Series in 2014, and the seventh under the sponsorship of WeatherTech. The series began on January 27 for the 24 Hours of Daytona, and ended on October 1 with the Petit Le Mans after 12 races.
The 2021 Petit Le Mans was the 24th running of the Petit Le Mans, and was held on November 13, 2021. It was the 12th and final race in the 2021 IMSA SportsCar Championship, and the 4th race of the 2021 Michelin Endurance Cup. The race was held at Road Atlanta in Braselton, Georgia. This race was the last ever race for the GTLM Class.
The 2023 IMSA SportsCar Championship was the 53rd racing season sanctioned by the International Motor Sports Association, which traces its lineage back to the 1971 IMSA GT Championship. It was also the tenth season of the IMSA SportsCar Championship since the merger between the American Le Mans Series and the Rolex Sports Car Series in 2014, and the eighth under the sponsorship of WeatherTech. The 2023 season marked an overhaul season for the championship, with a change in class structure and a new race on the season calendar at Indianapolis Motor Speedway. The championship began with the 24 Hours of Daytona on January 28 and concluded with the Petit Le Mans on October 14 after 11 races.
The 2023 FIA World Endurance Championship was the eleventh season of the FIA World Endurance Championship, an auto racing series organised by the Fédération Internationale de l'Automobile (FIA) and the Automobile Club de l'Ouest (ACO). The series was open to prototype and grand tourer-style racing cars divided into three categories. World Championship titles were awarded to the leading drivers in both the prototype and grand tourer divisions and to the leading manufacturer in prototype division.
The 2025 IMSA SportsCar Championship is a planned motor racing championship, set to be the 55th racing season sanctioned by the International Motor Sports Association, which traces its lineage back to the 1971 IMSA GT Championship. It will also be the twelfth season of the IMSA SportsCar Championship since the merger between the American Le Mans Series and the Rolex Sports Car Series in 2014, and the tenth under the sponsorship of WeatherTech.
Antonio García 
Alexander Sims 
Nicky Catsburg 
Tommy Milner 
Nicolás Varrone 
Chris Cumming
Pietro Fittipaldi 
James Roe 
