John German
John German
John German is an American engineer who is the US co-lead of the International Council on Clean Transportation. In that role, his research helped uncover the Volkswagen emissions scandal of 2015. German was investigating what he thought would be relatively clean diesel emissions in US cars, where standards are more strict than in Europe. The hope was to eventually improve the diesel emissions of European vehicles. After the results were published, which showed VW nitric oxide emissions were exceeding US...