Bruno Senna, nephew of Formula One legend Ayrton, gets behind the wheel of an F1 car for the first time as Honda put him to the test

The Brazilian completes 39 laps on day one of three, setting a time about two seconds off the fastest

Honda are trying out another Brazilian - Renault test driver Lucas di Grassi - as they seek to finalise their 2009 line-up

Jenson Button is on hand from day two to provide a yardstick and is 0.5secs quicker than Di Grassi on Tuesday, when Senna doesn't drive

Team boss Ross Brawn, on hand to keep an eye on the hopefuls' progress, chats to Button in a break on Wednesday

Senna completed 107 laps of the track in Barcelona on Wednesday and said his testing with Honda had been "very special".

Honda are at the test with other teams preparing for 2009, including McLaren, who have test driver Pedro de la Rosa on hand

Five-time world rally champion Sebastien Loeb is the centre of attention when he arrives at the Circuit de Catalunya in Barcelona

But Loeb has work to do as Red Bull invite the Frenchman to test against other F1 drivers for the first time

New Red Bull driver Sebastian Vettel watches as the teams set about tackling the 2009 rule changes which will see aerodynamics revised

There's no rest for star driver Robert Kubica as he tries out 2009-style taller rear wing, wider front wing and slick tyres for BMW Sauber

BMW's car, here driven by Kubica, was described by tester Christian Klien as "the worst (looking) Formula One car I have ever seen"

Guess who's back? Former Super Aguri driver Takuma Sato tops the timesheets for Toro Rosso clocking one minute 20.763 seconds

In another novelty, De la Rosa tries out the Force India, marking the start of McLaren's partnership with the team, which will have Mercedes engines and McLaren's gearbox in 2009