Nico Rosberg: The transition to green mobility needs to go faster

2016 F1 World Champion, sustainability entrepreneur and CNBC ESG Council member, Nico Rosberg, tells CNBC's Tania Bryer what's needed now to accelerate the transition to green mobility. For CNBC's Sustainable Future Forum, the co-founder of the Greentech Festival also told Tania what he hopes leaders at COP27 will achieve.