Jensen Button was "disappointed" that Nico Rosberg was not penalised for speeding under a yellow flag in Sunday¿s Japanese Grand Prix.
Championship leader disappointed with Rosberg penalty escape.
Jensen Button was "disappointed" that Nico Rosberg was not penalised for speeding under yellow flag conditions during Sunday's Japanese Grand Prix.
After starting 10th on the grid at Suzuka, Button finished in eighth place to pick up what could prove to be a crucial point in the chase for the World Championship title.
Rosberg was investigated for speeding under yellow-flag conditions after Jaime Alguersuari's crash on lap 46 brought out the safety car.
The race stewards however, decided not to punish the Williams driver after finding he 'had reacted adequately to the yellow flags and safety car boards'.
If upheld, Rosberg could have been stripped of his fifth-place finish, handing an extra point to Button and his team-mate Rubens Barrichello, who finished seventh, while Brawn would have clinched the constructors' title.
Button is 14-point ahead of Barrichello with two races to go but Red Bull's Sebastian Vettel thrust himself back into contention after claiming his third win of the season.
Surprising
Button however who was penalised himself for a similar infringement during qualifying on Saturday, remained pragmatic about the stewards decision.
The 29-year-old was demoted five places for not slowing sufficiently under yellow flags after Toro Rosso driver Sebastien Buemi's mishap at turn 14 left debris in the track.
"Always when you think someone has done something wrong and they don't get penalised, you're disappointed," he said.
"But it's not going to change anything massively I don't think. Life goes on. That's the decision, that's it.
"I don't know all the information while the FIA and the stewards, they have got all the information in front of them so whatever their decision, that's what it is.
"I did some really good laps, which brought me to the back of Rosberg, pitted, came out, caught up to Rubens, who was about 15-20 seconds down the road.
"So my pace was very good and after the safety car, Rosberg suddenly appeared three cars in front of me, so (it was) very surprising."
