The world title to be decided in the GP this weekend . Sebastian Hamilton leads Fernando Alonso by two points going into race at Interlagos . Vettel bidding for third straight title in his Red Bull . Ferrari 's Alonso is a two - time former champion .
F1 world title to be decided in Brazil GP this weekend . Sebastian Vettel leads Fernando Alonso by 13 points going into race at Interlagos . Vettel bidding for third straight title in his Red Bull . Ferrari 's Alonso is a two-time former champion .