The Brazilian Grand Prix will do more than crown a Formula One champion on Sunday.
Sebastian Vettel or Fernando Alonso will be lifting the drivers' championship trophy when the season-ending race is over, but they won't be the only ones attracting attention in Sao Paulo.
Seven-time champion Michael Schumacher is retiring again, while 2008 champion Lewis Hamilton will be driving his last race for McLaren before moving to Mercedes in 2013.
Vettel brings a 13-point lead into Brazil, meaning a fourth-place finish will be enough to give the 25-year-old Red Bull driver his third straight title. If that happens, Vettel will join Schumacher and Juan Manuel Fangio as the only drivers to win three championships in a row.
If Vettel is fourth and Alonso wins the race at the Interlagos track, both drivers will finish with 285 points, but the German will secure the title because he has more wins than Alonso - five to three. Vettel has finished fourth or better in 13 of the 19 races so...