Sebastian Vettel has won the final grand prix of the 2013 Formula 1 season at the Interlagos circuit in Brazil.
The Red Bull ace led from lap two, eventually finishing ahead of team-mate Mark Webber, and Ferrari's Fernando Alonso in third.
The race in Brazil not only marks the end of the F1 calendar for this year, but also the end of Webber's F1 career. The Australian driver will now move to Porsche to compete in Le Mans prototype racing.
Webber started in fourth position on the grid, with Alonso and Mercedes' Nico Rosberg lining up ahead of him, and Vettel once again taking pole position.
Vettel got a poor start off the line, however, meaning it was Rosberg who led the field into the first corner. Further down the pack, Lewis Hamilton was forced to go defensive as Alonso filled his mirrors, eventually being demoted to fourth position as the Spaniard sped past. Meanwhile, at the very front of the field, Vettel was able to successfully overtake Rosberg to re-claim the lead into lap two.
It was a short race for Romain Grosjean, whose Lotus exploded in a cloud of smoke on lap four, forcing the Frenchman to limp back to the pits.
By lap six, Alonso had continued his pace through the field, passing Rosberg to take second place. Vettel had opened up a huge lead, however, and was running unopposed with 4.9 seconds seperating himself and Alonso. Rosberg's race continued to deteriorate as he came under attack from Hamilton, prompting concerns that his tyres may be suffering excess wear. A radio message from the Mercedes garage to Rosberg said: "If you have problems with the tyres, then don't hold up Lewis. If they're coming back, then push."
Webber continued his strong final race, challenging Alonso for second place on lap 11 and passing him one lap later. That move left Vettel, albeit with a strong lead of some 9.6 seconds, being chased down by his Red Bull team-mate.
The challenges continued for Rosberg, who lost fifth place to the Ferrari of Felipe Massa having already been told to let Hamilton through too. He quickly also found himself under attack from the McLaren of Jensen Button.
The threat of impending rain showers around lap 22 caused a flurry of pit stops from the field. While most were smooth, Webber lost out with a very slow pit stop from Red Bull, meaning he exited behind Alonso in third place.
Massa was given a drive-through penalty by the race stewards on lap 30 for crossing the pit-lane entry line. The subsequent penalty cost the Ferrari driver some 16 seconds and released him back into the field behind the McLaren of Sergio Perez in ninth place.
Webber managed to again re-pass Alonso, and as the field continued to spread itself out Vettel was left running with an 11.9 second lead over the Australian, with Alonso falling behind and both Hamilton and Button also catching up in fourth and fifth places respectively.