 Complete the following phrase:  Prior to the 2015 season, Bamber signed with Porsche Motorsport as a works driver. In January 2015, he and fellow works drivers Jörg Bergmeister and Frédéric Makowiecki took the No.912 Porsche 911 RSR to seventh place at the 24 Hours of Daytona. Bamber and Nick Tandy joined Formula One driver Nico Hülkenberg in the Porsche LMP squad to contest the 6 Hours of Spa-Francorchamps and the 