Red Bull Racing's chief technical officer Adrian Newey believes that anything could happen in F1 next season - and that it is impossible to predict who will be battling it out at the front of the grid.
Newey was delighted with the way the Milton Keynes-based operation stepped up in '09 and while the squad failed to beat Brawn Grand Prix, it comfortably finished ahead of McLaren and Ferrari in the Constructors' Championship.
Indeed Sebastian Vettel and Mark Webber combined to win six races in total and by the end of the year the RB5 was considered superior to the BGP 001 piloted by Jenson Button and Rubens Barrichello.
Newey is now convinced that the confidence gained from winning races and fighting for the drivers' and constructors' championships in '09 will pay dividends next year.
"For me 2009 was a great year," he told Red Bull's official website, "because, although we didn't manage to win the championship, Red Bull Racing as a team matured to the point where we were able to win races and challenge for a championship.
"For the team to achieve that so early in its history has been very satisfying."
So what lessons did Red Bull learn? And what can they take from this year and use for 2010?
"I guess the most obvious thing is that it gives the team confidence that they can go out now and win races and field a very competitive car," he continued.
"How that affects our season next year remains to be seen but it has given a lot of people within the company confidence in their own ability.
"Other than that, it's a new season and everything as usual is up for grabs - it may be that other people have made big strides over the winter and so how we all start the season remains to be seen."
Asked about the 2010 car, Newey added that the RB6 won't be radically different to this year's mount.
"The main change in regulations for 2010 are much smaller than for 2009: the only ones of significance are the ban on re-fuelling and the smaller front tyre," he explained.
"That has meant we've gone for a much more evolutionary design route whereas the RB5 was a totally different car compared to its predecessor to satisfy a totally different set of regulations."