Lewis Hamilton continued at Interlagos today where he left off in Texas last Sunday by setting the pace in opening free practice for this weekend's Brazilian Grand Prix title showdown.
On a day of soaring heat and rising tension, the 27-year-old Briton clocked a best lap time in one minute and 14.026 seconds to outpace defending champion German Sebastian Vettel of Red Bull.
Vettel, who leads the title race by 13 points ahead of Sunday's finale, only needs to finish in the top four to become the youngest triple world champion in Formula One history.
His only rival for the title, two-time champion Fernando Alonso of Ferrari, was fifth fastest, separated from the front pair by Vettel's Red Bull teammate Australian Mark Webber and his own in-form Ferrari teammate and local hero Felipe Massa.
Vettel was three-tenths of a second slower than Hamilton while Webber, Massa and Alonso were so closely matched that they were separated by just 0.007 seconds at the end of the afternoon session.