Sauber Formula One driver Sergio Perez of Mexico sits in his car during the third practice session of the Malaysian F1 Grand Prix at Sepang circuit outside Kuala Lumpur in this April 9, 2011 file photo. Monaco Grand Prix qualifying was halted on Saturday after Perez crashed heavily leaving the tunnel in the third and final stage of the session. REUTERS/Bazuki Muhammad/Files (MALAYSIA – Tags: SPORT MOTOR RACING)