McLaren to be 'diligent, not cautious' over Austin reliability

McLaren insist they are not overly concerned about reliability going into this weekend's 2012 Formula 1 United States Grand Prix, despite a car failure having robbed Lewis Hamilton of almost certain victory at the last round in Abu Dhabi. Instead, the team's priority will be adding performance to the MP4-27 as they bid to win at the Circuit of The Americas and hunt down Ferrari in the battle for second in the constructors' championship

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