Question: Cooper MacNeil is a racing driver who operates a car under the high performance division of what company?

Context paragraphs:
Dwayne Leik: Dwayne Leik (born February 9, 1964) is a former NASCAR driver.  He was formerly an owner of Leik Motorsports and a part-time driver in the NASCAR Nationwide Series.  He formerly worked as the business manager for Marcis Racing and legendary NASCAR driver Dave Marcis.  Leik was able to secure racing sponsorship for Marcis for eleven consecutive seasons and he is widely regarded as the key figure in resurrecting Marcis’ faltering career.  Since Marcis Racing did not have a test team, Leik's car was often seen as a test car for Marcis Racing.  Leik also accompanied Marcis and participated in the IROC (International Race of Champions) test sessions.  He once logged over 1,100 mi in an IROC car at Daytona in a single day test.  He has also served as a driving instructor at the Fast Track High Performance Driving School and Richard Petty Driving School.

Walkinshaw Performance: Walkinshaw Performance, is an automotive company, involved in motor racing and the production of high performance sporting cars for regular road use.  The company was founded by former racing driver, Scottish businessman, Tom Walkinshaw and is essentially a successor organisation to his previous automotive concern, Tom Walkinshaw Racing which was driven into bankruptcy by the failure of the Arrows Formula One team, then a part of TWR.  Walkinshaw Performance is now operated by Walkinshaw's son, Ryan.

Leh Keen: Lehman McGrath Keen III (born July 22, 1983) is an American racecar driver born in Dublin, Georgia, who competes in the United SportsCar Championship.  He most recently drove the No. 22 Alex Job Racing WeatherTech Porsche 911 GT America in the United SportsCar Championship GTD class with co-driver Cooper MacNeil.

Mercedes-AMG: Mercedes-AMG GmbH, commonly known as AMG, is the high performance division of Mercedes-Benz.  AMG independently hires engineers, manufactures and customizes Mercedes-Benz AMG vehicles.  Mercedes-AMG is headquartered in Affalterbach, Baden-Württemberg, Germany.  AMG was originally an independent engineering firm specializing in performance improvements for Mercedes-Benz vehicles; Daimler-Benz AG took a controlling interest in 1999, then became sole owner of AMG in 2005.  Mercedes-AMG GmbH is now a wholly owned subsidiary of Daimler AG.

Ford Performance: Ford Performance (formerly Ford Racing) is the high performance division of Ford Motor Company and the multinational name used for its motorsport and racing activity.

Tom Chilton: Thomas James "Tom" Chilton (born 15 March 1985 in Reigate) is a British racing driver.  He has spent most of his career competing in touring car racing; he was a former factory Vauxhall and Honda driver in the British Touring Car Championship, and currently drives for Sébastien Loeb Racing in the World Touring Car Championship.  His younger brother Max Chilton, who is also a racing driver, made his Formula One debut in and as of 2016, races in the American IndyCar Series for Chip Ganassi Racing.

Klenk: The Klenk-Meteor was a racing car which competed in the 1954 German Grand Prix.  The car was based on the established German marque of Veritas which was active between 1948 and 1953.  Veritas is chiefly remembered as a manufacturer of sports cars and successful Formula Two racing cars.  The company closed when its founder, Ernst Loof, became ill.  He subsequently died in 1956.  The Klenk-Meteor entered for the 1954 German Grand Prix was essentially a Veritas Formula Two car.  The car was owned and prepared by the noted German racing driver Hans Klenk who intended to race it himself in the Grand Prix.  However, Klenk's career as a racing driver came to an end when he suffered injuries in an accident while working as a test driver for Mercedes-Benz.  The car was driven in the Grand Prix by another German, Theo Helfrich.  He retired on lap 9 with engine failure.

Cooper MacNeil: Cooper MacNeil (born September 7, 1992 in Hinsdale, Illinois) is an American born racecar driver who currently competes in the WeatherTech SportsCar Championship.  He drives the No. 50 Riley Motorsports / WeatherTech Mercedes-AMG GT3 in the WeatherTech SportsCar Championship GTD class with co-driver Gunnar Jeannette.

Johnny Mowlem: Johnny Mowlem (born 12 February 1969) is a professional British racing driver.  Mowlem is considered to be among the world's elite sports car drivers, having competed in every class of world championship sports car racing.  He is the 2013 European Le Mans Series GT champion, having previously won the British Porsche Cup championship in 1996 and 1997.  He has class victories in both the 24 Hours of Daytona and the 12 Hours of Sebring, and has earned podiums at virtually all of the world's major sports car races, including the Le Mans 24 hours and the 1000 km Nürburgring.  He has also achieved overall podium finishes at the Daytona 24 hours as well as at the famous 10-hour Petit Le Mans race in the USA.  Mowlem began his career in single seaters racing up to Formula 3 level and got his big break when he was chosen personally by triple Formula One World Champion Jackie Stewart to join his "staircase of "talent" team in the junior single seater formula, alongside drivers of the calibre of Dario Franchitti, Allan McNish and Gil de Ferran.  He switched to sportscars in 1996, winning the Class 1 championship of the British Porsche Cup and then gained international recognition the following year when he won all 17 races of the British Porsche Cup to become British champion.  This launched his professional career in World Sportscars.  Later in his career he gained further international attention for his work as a driver of the hybrid-powered Ginetta Zytek prototype racer in the ALMS in 2008 and 2009.  In 2010, Mowlem was a Lotus Racing factory driver, driving the American Le Mans Series (ALMS) and in the International GT Open Series for sports cars in Europe.  His latest driving championship came in the European Le Mans Series in 2013.  Mowlem raced in the ALMS series every year that sanctioning body held races.  Mowlem also operates his own driving academy, working with both corporate clients and drivers wishing for a career in racing.

ACER Racing: ACER Racing is a large OEM manufacturing company specializing in precision high performance racing parts and is one of the pioneers of modern remote controlled car racing.  It was founded in 1989 in Santa Monica California USA.  It is a manufacturer of high performance precision ceramic ball bearings and ceramic silicon nitride balls as well as performance products for model car racing, skateboarding, roller skating and other precision industries.  Its products are distributed nationally and internationally by Great Planes Model Mfg.

Supporting paragraphs: Cooper MacNeil Mercedes-AMG
Answer: Mercedes-Benz