Reigning MotoGP world champions Ducati kicked off the defence of the premier class crown with an official team launch in Italy on Tuesday 8th Janurary.Watch the video as MotoGP champion Casey Stoner and new Ducati team-mate Marco Melandri unviel the bike against the spectacular mountain backdrop at the Madonna di Campiglio ski resort. 2008, Casey, Champion, Ducati, MCN, MotoGP, Motorbike, Motorcycle, Sport, Stoner