Nico Rosberg quit Formula One today, December 2, just five days after winning the world title for Mercedes in a move that stunned motor racing. The 31-year-old German, who beat off teammate Lewis Hamilton in the finale, is the first reigning champion to quit since Alain Prost in 1993. Rosberg posted a message on social media for his fan about retirement.br br ----------------------------------------------------------------------------------------------------------br Subscribe to OneIndia News Channel for latest updates on movies and related videos.