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Dan Carder (born 19XX) is interim director of the Center for Alternative Fuels, Engines and Emissions at West Virginia University. He is best-known for leading the team of researchers which helped to uncover the Volkswagen emissions scandal. For this work Carder was listed as one the Time 100 most influential people in 2016.

As a result of a number of investigations, including that of Carder and his team in West Virginia, on 18 September 2015, the United States Environmental Protection Agency issued a notice of violation of the Clean Air Act (United States) to the car manufacturer Volkswagen after it was found that Volkswagen had intentionally programmed turbocharged direct injection (TDI) diesel engines to activate certain emissions controls only during laboratory emissions testing.