At least 30 Volkswagen managers are reported to have played a role in using software to cheat on emissions testing on more than 10 million diesel carsVolkswagen manufactured diesel vehicles it knew would not pass emission standards and installed a defeat device, Volkswagen ran television commercials for the past several years touting its “clean diesel” vehicles. It wasn’t until the Environmental Protection Agency (EPA) threatened to withhold certification of the company’s 2016 diesel models that the company admitted to installing the defeat devices