Button and Perez unveil the McLaren MP4-28

The wraps came off McLaren's 2013 car on Thursday morning, as drivers Jenson Button and Sergio Perez revealed the Mercedes-powered MP4-28 at the team's UK base in Woking. Following a cavalcade of historic machinery from McLaren's past - the team celebrate their 50th anniversary this year - Button and Perez entered driving the company's latest road cars, before uncovering their new F1 challenger

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