Spot the world-famous Formula 1 driver... two-time champion Fernando Alonso mixes with children from the Unicef-linked Oscar Romero school on the southern outskirts of Sao Paulo ahead of the Brazilian Grand Prix
Bright and breezy after his recovery from a life-threatening head injury suffered in qualifying for the Hungarian GP in July, Felipe Massa laughs and jokes with his wife Rafaella and Ferrari team-mate Giancarlo Fisichella
Mark Webber wears the expression of a man whose title challenge has slipped unluckily away from his grasp in recent weeks despite grabbing the first race win of his career in a season of rich but ultimately lost promise
The remaining three title challengers - Red Bull's Sebastian Vettel, Brawn's championship leader Jenson Button and team-mate Rubens Barrichello - defy the pressure with some brotherly love in a Sao Paulo news conference
Back within the sport's inner sanctum for the first time since his accident near Budapest, Massa is greeted like a long-lost son by F1 commercial rights holder Bernie Ecclestone - the man with the unmistakable grey locks
Now time for the serious stuff: Button, who can clinch the title in Brazil if he manages a podium finish, is flanked by team boss Ross Brawn (right) and his race engineer Andrew Shovlin as they walk the Interlagos track
With Friday's first practice session getting going under the grey Brazilian skies which hang heavy over Sao Paulo, Renault's Ferrari-bound Alonso puts in some early laps - the Spaniard finishing 16th in the timesheets
Rain is predicted - and it comes - causing most drivers, including Germany's Vettel, to head back to their garages. Vettel came third in the timesheets behind the Brawn of fellow title rival Rubens Barrichello...
His championship-leading team-mate, England's Jenson Button, is seventh in the first practice session - although little is ever read into the positions during a period primarily used for testing updates and tyres
Nevertheless, Australian driver Mark Webber finishes top of the first practice session timesheets at an Interlagos circuit which is known to be a little weather-beaten - but is also considered one of the best in Formula 1
Ross Brawn hunkers down in the Brawn garage as he thinks about how to treat both his title-chasing drivers fairly while at the same time plotting how to ensure one of them actually clinches the 2009 championship
Sebastien Buemi's Toro Rosso car is taken away from the Interlagos track in Sao Paulo by stewards after he overshot Turn Eight and ran into trouble, the result of which was one of his front wheels hanging off recariously
With second practice well under way, Ferrari fans gather in one of the stands at Interlagos to unveil a huge flag championing the cause of the beloved Italian team currently lying third in the constructors' championship
McLaren's Lewis Hamilton - who will relinquish his world title in Brazil this weekend or after the final race of 2009 in Abu Dhabi on 1 November - has a mixed day, finishing fifth in the first practice session and 10th in the second
Kamui Kobayashi is yet another F1 rookie to join the fray as the season unfolds - he is driving Timo Glock's Toyota this weekend with German still recovering from a high-speed crash in qualifying for the Japanese GP
In outstanding form of late after a languid start to the season, 2007 world champion Kimi Raikkonen takes his Ferrari round the Interlagos circuit during a second practice session in which he was the fourth-slowest driver
Englishman Button is on the trail of his Brazilian Brawn team-mate Barrichello as the title-chasing pair clock 45 and 38 laps respectively in the second session as they tune up for the real business of qualifying on Saturday
Spain's Alonso, who prides himself on driving consistently well throughout a whole race season, records the quickest lap of the day though with one minute 12.314 seconds, just 0.043 seconds ahead of Sebastien Buemi
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