Williams unveil the FW35 in Spain

Williams became the final team to launch their 2013 car on Tuesday morning, as the Renault-powered FW35 was unveiled in the Barcelona pit lane at the start of this week's four-day test at the Circuit de Catalunya. To be raced by 2012 Spanish Grand Prix winner Pastor Maldonado and new team mate Valtteri Bottas, Williams hope the car will help them improve on their eighth place in last year's standings

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