Formula One world champion Jenson Button [ Images ] thinks as many as seven teams could be battling it out throughout 2010 for the end-of-season honours.
"You've got us, Ferrari [ Images ], Mercedes [ Images ] and Red Bull, but you've also got Sauber, Force India [ Images ] are not far behind, and the Williams. So it's very, very competitive, which is good to see."
Compatriot and team-mate Lewis Hamilton [ Images ], the 2008 world champion, finished fastest in the final pre-season testing session in Barcelona [ Images ] on Sunday just ahead of Red Bull's Mark Webber [ Images ] and Ferrari's Felipe Massa [ Images ].
Seven-times world champion Michael Schumacher [ Images ] of Mercedes came in sixth despite being out of the sport since 2006, and Hamilton cannot wait to pit his skills against the 41-year-old German.
"To be on the same track as him will be a really cool feeling," he said, a broad grin breaking out on his face.
"He's a legend in the sport."
Button, like Hamilton, was eager to get the season underway at the Bahrain Grand Prix [ Images ] on March 14.
"I'm going to be a part of it all, which is great. Going into the race with the number one on the car, what a challenge," he said.