Tom Kristensen has ended his active career as a race driver but the Dane, who continues to work for Audi as an ambassador and fitness consultant, is not suffering from boredom. The Le Mans record winner is working on a book about his career that is to be published on the occasion of the Le Mans 24 Hours. On Wednesday night, he was a surprise guest at the season opener of the RCCO slot car racing series that is celebrating its 25th anniversary this year. At the controls of an Audi R8, he won a “Danish duel” against his compatriot Anders Fjordbach, who in 2015 is competing in the Blancpain GT Series in an Audi R8 LMS ultra.