Sebastian Vettel was fastest in the second practice session at Monza.
He set a 1’24.010 using the soft tyres, edging Lewis Hamilton by 0.036s.
The track had warmed up to over 40C by the start of the session and the drivers struggled to beat the times from this morning. Vettel’s best was two-tenths off Hamilton’s mark from first practice.
Vettel led the way early in the session when all the drivers were lapping on medium tyres.
But Lewis Hamilton came to the fore halfway through the session when the soft tyres started to appear, taking over at the top of the times.
Vettel was delayed by traffic – Vitantonio Liuzzi and Felipe Massa – on his first run on soft tyres.
But he returned to the top of the times with a 1’24.010 later on. Now it was Hamilton’s turn to get held up in traffic as he caught Jaime Alguersuari.
The Toro Rosso driver had a near miss earlier in the session when he had to take to the grass at one of the fastest points on the circuit.
He had caught Adrian Sutil who appeared to move right to let him past as Alguersuari was already heading the same way. Alguersuari gesticulated angrily at the Force India driver having returned to the track.
Moments later the other Toro Rosso was in more serious trouble. Sebastien Buemi dropped the left-hand wheels of his car into the gravel at the exit of Parabolica, skewed sideways and hit the barrier hard with the left side of the car.
Fortunately Buemi was unhurt but the car was badly damaged and he missed the rest of the session.
Daniel Ricciardo missed much of the running due to an electrical problem on his car. He finally set his first lap with two-and-a-half minutes to go.
Kamui Kobayashi pulled over with an apparent technical problem at the end of the session.
Nico Rosberg was another driver whose running was curtailed by a problem earlier in the session. He ended up third from last while his team mate was third.
The Ferraris of Felipe Massa and Fernando Alonso completed the top five.
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