Pictures from Thursday at and around the Circuit of the Americas ahead of its first Grand Prix.
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Images © Ferrari spa/Ercole Colombo, Lotus F1 Team/LAT, Williams/LAT, McLaren/Hoch Zwei, Mercedes, Daimler/Hoch Zwei, Getty Images/Red Bull, Sahara Force India F1 Team, Sauber F1 Team, Caterham/LAT, Marussia, HRT, Pirelli