 The Toyota test and reserve driver for the 2008 season was Japanese driver Kamui Kobayashi.The Toyota team let driver Ralf Schumacher go at the end of the 2007 Formula One season, Schumacher then signed a contract with Mercedes-Benz in the DTM for the 2008 season.The TF108 had a new longer wheelbase to aid stability and a totally new aero package that was hoped to give the car great potential.