DTM and GTWC Europe - GT3 in both series but different philosophies

Today's DTM has nothing in common with the old days. The GT3s have replaced the Class-One cars, but the success is still there. The contacts are still fierce, the BOP has undergone many changes and the political side of the series is still very much present. Endurance-Info went to ask Renaud Dufour, the well-known engineer at Haupt Racing Team who works in both the DTM and the GT World Challenge Europe, a few questions.