For several F1 teams Barcelona this week was the last test of the winter, while for Scuderia Toro Rosso's new Ferrari-powered car it was to be both the first and the last track test before the new season gets underway in 14 days time. The Faenza, Italy-based team wrapped up four days of testing at the Spanish track this afternoon with the new STR4 chassis.

Having driven a total of 154 laps, over two full race distances yesterday, new young Swiss signing Sebastian Buemi, who has risen through the Red Bull junior driver programme ranks to be given a full Toro Rosso drive for this year, completed his programme this morning, continuing with development work on the new car.

The team then decided to switch drivers, putting Sebastien Bourdais, the former triple ChampCar series champion who drove for the team last year, back in the car for the afternoon sessions. This was because the Frenchman had driven on the first two days, when technical problems had seriously restricted his running time. Therefore he was given this opportunity to put in more laps, now that the initial teething troubles on the car had been sorted out.

The Scuderia Toro Rosso now heads back home to Italy with plenty of data to study and work to do, prior to the first race of the season in Melbourne on 29th March.