The final day of the AT&T Williams test would see Nico Rosberg  continue his testing duties. Nico would continue with the preparations of the FW31 for the 2009 season, including set-up work, tyre and aero testing. The day would start with fog but this would lift allowing the sun to shine.

Around mid morning Nico would start to set times in the 1m:19 seconds. His best time was a 1m:19.888, followed shortly by a 1m:19.774. Nico would complete 120 laps, 558kms, and set the second quickest time of the ten-strong field. Over the duration of the week, AT&T Williams covered 1,797kms of the Barcelona track valuable mileage which will assist the team with final preparations for the opening rounds of the 2009 season.

Team Quotes:
Sam Michael, Technical Director, Williams F1:
“After an initial delay due to fog this morning, we spent our last day in Barcelona completing another useful session working mainly on the optimisation of set-up around the slick tyres, something that will be key to this year’s championship. We have made progress over the four days and now look forward to our final test in Jerez next week where we will sign off some more parts for Melbourne. The lap times are close at the moment making it difficult to predict the order - great for the sport!”

Nico Rosberg:
“We’ve put in a lot of laps this week and have definitely made good progress. Our schedule has mainly focussed on mechanical and aero testing, of which there was lots to learn because there are so many new concepts and designs this year. It’s difficult to judge where everyone is because the times are quite close, but we have one more test next week which will be an advantage.”

Kazuki Nakajima:
“It was another good test for the team. No major issues came up and the car was really consistent all week. We also completed a race simulation and did qualifying runs as well, which was good. We’ll cover any outstanding work we need to do during the one remaining pre-season test next week in Jerez and then look forward to the season actually starting!”