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There were piles of Pirelli tires, too, and a pit stop challenge that involved a very loud wheel gun.

Brazilian Felipe Massa finished a distant third for Mercedes-powered Williams after holding off Ferrari's Sebastian Vettel, who had lost crucial seconds on his one pitstop when the wheel gun jammed on his right rear tire.

Stuck behind Vettel in the first stint after a poor start caused by a systems malfunction, Mercedes' attempt to 'undercut' the Ferrari at the first pit stops foundered because of a problem with the wheel gun on Hamilton's left rear.

The incident happened because a mechanic's hand slipped on the wheel gun and he inadvertently pressed the button that indicates he is finished to the mechanic signalling to the driver.

Red Bull said the individual using the wheel gun's finger slipped on to the button he should press to indicate he is finished.