Sebastian Vettel obliterated his own lap record as he topped both Indian Grand Prix free practice sessions, raising expectations he'll snare his fourth world title this weekend.
Vettel, with a 90-point lead over his nearest challenger Fernando Alonso, only needs to finish in the top five in his Red Bull to make it four championships in a row.
The German showed his intent by lapping at a minute 26.68 seconds in the first practice and improved with 1:25.72 in the second, surpassing his own 2011 record of 1:27.24.
Vettel's Red Bull team-mate Mark Webber, who will quit Formula One at the end of the season, made it a one-two for Red Bull in both sessions. His best time of the day was 1:26.01.
The first 10 drivers all finished under Vettel's old lap record in the later session, promising a fast race at the Buddh International Circuit on New Delhi's outskirts.
Romain Grosjean of Lotus was third quickest, ahead of Lewis Hamilton, Alonso, Nico Rosberg, Felipe Massa and Kimi Raikkonen.
The final practice will take place on Saturday morning, before the qualifying sessions later in the day.
