He studied economics at the University of Mannheim and completed his Ph.D. there. Worked many years in the car industry to learn marketing and sales management “hands on”. After positions at Opel, Peugeot, Citroen, Porsche, he returned to university: 1996 University of Applied Sciences Gelsenkirchen and 2008-2020, University of Duisburg-Essen. He was teaching business administration and learned a lot about engineering from his colleagues. "To understand business economics, you need to get confronted with products and technology." Top expert in the media on car issues.