source: Audi Sport Mattias Ekström returns to the place of his Rallycross title win Audi pilot travels to Estering race weekend ranking second in World RX Ekström: “Spectacular spot and one of the best on the World RX calendar” This weekend (October 13/14), the FIA World Rallycross Championship (World RX) comes to Germany. For Audi driver Mattias Ekström and EKS Audi Sport, the Estering race track in Buxtehude is very special. In 2017, Mattias ...