Nico Rosberg jokes he could help Lewis Hamilton with his German now he's retired

Nico Rosberg joked he could help Lewis Hamilton learn to speak German now he has retired, while Hamilton said he hoped to remain a Formula One driver for the next decade as the duo addressed Mercedes fans at the constructor's end of season event in Stuttgart.

Newly-crowned F1 champion Rosberg, who clinched his maiden world title only six days ago in Abu Dhabi, stunned the sporting world on Friday by revealing his retirement from the sport with immediate effect.