Britain's Prime Minister David Cameron and Royal Air Force pilot Wing Commander Andy Green, the current world land speed and supersonic speed record holder, with a replica of a 13-meter long jet-and-rocket propelled British Bloodhound Super Sonic Car in Downing Street, June 24, 2013. The car is aiming to beat the current land speed record of 1,228 km/h and also to be the first land vehicle to exceed 1,000mph by 2015. [Photo/icpress.cn]

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