Jenson Button says he has no safety concerns about returning to Sao Paulo for this weekend's Brazilian Grand Prix, despite being held up at gunpoint in the city last year.

Button was in a car that was approached by armed men following qualifying for the 2011 race, with the specially-trained police officer at the wheel of the Mercedes B-class using the car as a battering ram to escape.

The attack on the McLaren driver was the latest in a series of incidents involving F1 personnel in recent years but with security being increased for this weekend's season finale, Button said he saw no reason to be worried.

"No, not at all," he told Sporting Life when asked if he was worried about heading back to the city. "Something was going to happen. It had happened so many times with the mechanics and engineers, and in the end it was going to happen to a driver. I don't think they wanted anything except for our bags out of the boot.

"But we have more security this year. I think every driver you see will have a police escort, and they should do. But you have to spare a thought for everyone else in Formula One because they don't have police escorts. So yeah, it's a tough one because it's such a good grand prix. I love racing at Sao Paulo.

"It's a pity things do happen there when we leave the circuit, but I think that just shows the divide in Brazil."

Button heads to Brazil looking to wrap up second in the championship standings and he said he was hopeful of ending 2011 with a strong run at Interlagos.

"If I can qualify well, in the top few places, that will be a big step forward for me because last year I qualified 13th, and that was my best qualifying for five years," he said. "So it's been a difficult one for me on Saturdays in Brazil, but Sundays have always been very good, so I'm excited about it, and it would be lovely to get the last win of the season.

"The car is obviously working well, and it would be nice to beat Seb over the second half of the season.
"So I'm looking forward to the last race, hopefully a good sign off, and then start it all over again next year."