**The final day of this year’s first pre-season test sees three world champions on to the track in their new cars.**Spain’s Fernando Alonso is getting his first taste of the Ferrari that has been fastest on both days so far in the hands of team-mate Felipe Massa.
Reigning champion Jenson Button is having his debut in the new McLaren, while Michael Schumacher continues the work he started on Monday for Mercedes.
The Renault, Sauber and Williams teams are also at the test in Valencia.
BBC Sport will be bringing you the latest updates throughout the day.
LIVE TEXT COMMENTARY (all times GMT)
**1100: **BBC Sport’s Sarah Holt has been busy tracking down the drivers in Valencia. Interviews with Lewis Hamilton, Felipe Massa and Rubens Barrichello are linked off the side of this story, and Sarah has also caught up with Renault’s Robert Kubica. He admits his team are “not able to fight at the top yet”, but says he is quite pleased with the car and optimistic about how much progress they can make.BBC Sport’s Sarah Holt in Valencia: "I have some more details from Sauber HQ on Pedro de la Rosa’s stop at the side of the track. "The Spaniard was trying to pass Nico Hulkenberg’s Williams on the inside but he reckons the F1 rookie didn’t see him and so they touched.
"The Sauber mechanics quickly got to work fixing the damage, repairing the floor, front wing and the engine cover. That’s the first dust-up we’ve seen in Valencia.
“Meanwhile, Jenson Button is out setting some times after a prolonged period buried inside the McLaren garage. The world champion has set a time of 1:13.783, which is fifth fastest. Fernando Alonso is following team-mate Felipe Massa’s example by topping the timesheets with 1:11.837.”
1045: The new Virgin team are launching their new car in London on Wednesday - we’ll bring you news and pictures as soon as we have them.1030: Of the teams that raced in 2009, only Force India and Red Bull are not running new cars in Valencia. Force India have announced this morning that they will be unveiling their car ontheir websiteon 9 February, before running it at the first Jerez the following day. The new Red Bull will also appear at Jerez. Team boss Christian Horner says they areconfident their "aggressive approach"is the right one.BBC Sport’s Sarah Holt in Valencia: "We’re only an hour or so into testing but it’s been quite a long morning. "First of all I had an hour and a half’s journey in to the track because of heavy traffic. Ferrari reckon 50,000 fans are going to turn up to watch Alonso today, so we suspect this could have been part of the reason behind queues.
"We rushed straight to the pits for Jenson Button’s photo call with the new McLaren. He sat on the front wheel but, in good humour, refused to point at the number one when asked to do so by the photographers.
"So far, Button has not set a time, and it’s no surprise to see Alonso at the top straight away with a 1:11.905 - less than 0.2secs behind Massa’s fastest lap of his two days’ running on Monday and Tuesday.
“Pedro de la Rosa is continuing Sauber’s good showing in second place with a 1:12.293, which he set before stopping on the track. Schumacher is third on 1:12.546.”
1000: Morning. What a day this could be - Alonso, Button and Schumacher all out in their new cars. Lips smacking Pulse racing Mine arThis article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.