SAO PAULO, Brazil - A year after escaping armed robbers while leaving Interlagos in 2010 McLaren's Jenson Button suffered a different kind of hold up when he tried to gain entry to the Brazilian Formula 1 circuit.The McLaren driver told Reuters that he, along with other drivers including including Renault's Bruno Senna and Team Lotus' Karun Chandhok, had been denied access when they turned up with a police escort.Button said: "They wouldn't let us in the front gate. They closed the tunnel and wouldn't let us in so we were half an hour waiting outside to get in.""We had to drive around and then try and come across the circuit. We were like 'We've got the FIA press conference and you'll be paying our fine'...eventually they let us across the circuit and we got in."FUN WEEKENDButton took the first points of his career at Interlagos with Williams in 2000 and his World championship with Brawn in 2009 but has only been on the podium once in Brazil and has not qualified in the top 10 for six years."I'm hoping to go a little better this time. The championship's won, we can have a lot of fun this weekend," he added.Button is second overall ahead of the season-ending race in a championship already won by Red Bull's Sebastian Vettel.