Sahara Force India completed a busy free practice programme in preparation for this weekend's United States Grand Prix at the Circuit of the Americas.Adrian Sutil: 'It's my first visit to Austin and I have to say I really like the track. There are some nice corners and some tricky ones where it's easy to make small mistakes. It's not that easy to learn the track either because it's a challenging lap, especially the high-speed sections. We worked hard to improve the car set-up today, but the balance is still not where I want it to be. Hopefully we can make some positive changes overnight. As for the tyres, there is not a big difference between the hard and the medium, but we managed long...
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