Indian Grand Prix 2013: Second practice highlights

Sebastian Vettel heads a Red Bull one-two in second practice for the Indian Grand Prix.

The German ended the session 0.289secs clear of his team-mate Mark Webber, with Lotus' Romain Grosjean third and Lewis Hamilton fourth for Mercedes.

A number of drivers explored the limits of the Buddh International Circuit during the session, with Pastor Maldonado's Williams suffering a puncture caused by a loose wheel nut.

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