Heikki Kovalainen has refused to point the finger at anyone for his underperformance during his time at McLaren.
Kovalainen left McLaren at the end of 2009 after two rather mediocre seasons during which he was soundly trounced by his team-mate Lewis Hamilton.
The Finn stepped aside for reigning World Champion Jenson Button, who, upon his arrival at McLaren for a look-and-see, actually asked team boss Martin Whitmarsh "is this Hamilton's team?"
Button, though, is not alone in his perception of McLaren - which was quickly denied by the team - although Kovalainen, who put in some decent results during his time at Renault, has refused to be drawn on just why he slumped at McLaren.
"I think I know the reasons why it didn't work out and I will do things differently here at Lotus," he told ITV.
"But I don't want to get into that too much - it's gone now, it's gone, the past time for me. A shame I didn't win more races but that's the way it is sometimes."
Kovalainen's inability to match his team-mate led to some rather public criticism from his McLaren team bosses, who made it clear that he wasn't performing as expected and that unless he upped his game he would be out.
The Finn, though, wasn't able to and when the end of the season he arrived found himself looking for a new job.
Securing one with newcomers Lotus, Kovalainen is determined to prove he deserves to be in Formula One and to raise his stock, which was taken a dive in the paddock.
"I've always had 100 percent confidence in my own ability and I have a lot of people around me that have kept supporting me," he said.
"I don't really have any problems with the criticism from people, public or management or whoever commenting [from] outside.
"I'm quite well aware myself where I am, where I'm at and what needs to be done and for me it's quite easy to go work with that philosophy - and it doesn't really bother me what people say outside.
"Of course to stay in Formula 1 and be among the top drivers there you have to do good performances and at McLaren I wasn't able to do that so in that sense, yeah, I have to sort of prove myself again to get my name back up there where it should be.
"I'm confident I can do that."
