Red Bull's Sebastian Vettel focused on winning more titles

Red Bull's Sebastian Vettel says his thirst for success has not been quenched by winning his latest world title.

Vettel, who sealed a fourth consecutive drivers' world championship at the Indian Grand Prix, visited the Red Bull factory to celebrate his success, with a news conference followed by a meet-and-greet with the employees.

And, Vettel confirms he is very happy with the team and praises them for taking a risk by promoting Daniel Ricciardo from junior team Toro Rosso to be his team-mate next season, a move similar to the one he made in 2009.