Former Formula One World Champion Jenson Button said to Valentino Rossi that in comparison to what he does, MotoGP riders are nutcases and he likes the fact there is on-track punching as well.

Button, who is surprisingly funny for an android, was sharing a stage with Rossi for the opening of the Silverstone Wing, a new pit, paddock, media and conference facility and made reference to the Stoner-De Puniet handbags at Le Mans.

"What we do it pretty crazy it really is pushing ourselves to the limit. These guys are amazing riders, but absolute nutcases. I watched the race at the weekend and those guys are out of this world. It's how close they get to each other, plus there's some punching going on as well. We can't do that, we can't reach," said the McLaren driver.