Bernie Ecclestone has admitted he was surprised to see Jenson Button take on the challenge of racing alongside Lewis Hamilton at McLaren.
The last two world champions will be paired together in an all-British line-up at McLaren next season after Button made a shock decision to leave the Brawn team that had taken him to the 2009 title.
Many pundits have suggested that Button is bold to put himself in what is regarded as a team shaped around Hamilton, and Ecclestone agrees.
"He obviously knows what he's doing," Bernie told Radio Five Live.
"He must be satisfied with the arrangements he's got in hand.
"I must confess I was a little surprised to see it happening, but there you go.
"I suppose he feels confident enough to take on Lewis, and that's it. But it's a big task to take on."
Although he thinks Button will find Hamilton tough to beat, Ecclestone expects a harmonious relationship between the duo.
"I think they'll work well, they're both English guys and understand each other," he said.
"Lewis isn't the sort of guy who needs pushing, so I don't see how it will benefit the team other than they've got two world champions and two super drivers on board.
"During the year it will become obvious who is the quickest, and whoever that's going to be will be the number one."
Since Button's decision there has been speculation that Michael Schumacher will be lured out of retirement to take the seat he has left vacant in the Mercedes works team that Brawn will become in 2010.
But Ecclestone doubts Schumacher will make a comeback.
"I would think it's most unlikely," he said.
"I don't see any reason why he should.
"He's done all he needs to do and he doesn't have to prove everything to anyone.
"He's been lucky, he's now happy and walking around without any problems, why should he take any risks?"