|© AP Photo/Victor R. Caivano
Rubens Barrichello was back at the Formula 1 paddock at Interlagos for the first time since ending his F1 career last season.
"This time I'll be doing something that I haven't done in 20 years, which is to watch a race here from outside of the track," the 40-year-old Brazilian said.
Barrichello raced for 19 years in F1 before losing his seat at Williams at the end of the 2011 season. He twice finished second in the drivers' championship as Michael Schumacher's teammate at Ferrari.
Known as a specialist in the wet, Barrichello said he hoped for bad weather in Sunday's season-ending race.
"If it rains and someone wants me to go out and test the car, I'll be more than happy to do it," Barrichello said.
He raced in the IndyCar Series this season but it remains uncertain whether he will be back next season.
"I'm negotiating with a few teams but it's still too early to know what's going to happen," he said.
Barrichello also made guest appearances in a Brazilian stock car series this month and returning to Brazil to race full-time also remains an option.
Local media even published unconfirmed reports that he is negotiating a seat in F1 next season, possibly with team Caterham.