FILE - In this Saturday, June 29, 2013, file photo, Mercedes driver Lewis Hamilton of Great Britain, left, celebrates after winning the pole position, along with his teammate Nico Rosberg, right, of Germany who finished second following the qualifying session at the Silverstone circuit, England. Mercedes' rivals hope a busy three weeks of tinkering on their slower cars and the move to European tracks will be enough to at least threaten Lewis Hamilton's and Nico Rosberg's stranglehold on Formula One. (AP Photo/Lefteris Pitarakis)