Stuttgart, Germany - CCM News. Saturday January 29th was a big day at Mercedes-Benz in Stuttgart. The German car company hosted a star-studded gala to celebrate the 125th anniversary of the first patent registration of a motor car by Carl Benz . German Chancellor Angela Merkel was the guest of honour. On the same day the all new Mercedes-Benz roadster SLK had its world premiere and the Mercedes-Benz Fuel Cell World Drive kicked off. World renowned Formula-1 drivers Michael Schumacher, Nico Rosberg and David Coulthard introduced the third generation of the Mercedes-Benz SLK., one of the most exciting and successful sports cars ever built. T German Chancellor Angela Merkel will be in attendance to push the ignition button of the 3 the B-Class F-Cell models to kick of the Mercedes-Benz B-Class Fuel Cell World Drive 2011, an unparalleled long-distance journey that will take the fuel cell vehicles through 14 countries. and four continents. The specific goal of the F-CELL World Drive is to demonstrate the efficiency and suitability for everyday use of fuel cell technology as well as to campaign the for the development of a global hydrogen filling station network.