Mercedes Boss Downplays Ralf's Transition to DTM

Ralf Schumacher is this week back in action for Mercedes-Benz, increasing the likelihood that the former grand prix winner will race in the German touring car series (DTM) in 2008.According to publications including Cologne's Express and the German national Bild, the 32-year-old's latest three-day run at the Estoril circuit, concluding on Thursday in Portugal, was intended to be secret.