February 19 in Barcelona started the second series of pre-season tests Formula 1 before the Championship of 2013. Before the start of the races Williams team presented its new car FW35, which has become an evolutionary extension of last year’s car. According to the British stables, from the former to the new chassis there are only 20% – the remaining elements vosemedyat percent of work were drawn again. In Jerez, the team chose to work with the last year’s version of the chassis to complete all the tests in the wind tunnel trends. The new Williams FW35 race car seriously modernized bottom, sitsema exhaust, gearbox, rear suspension, radiators and housing. Aquiline, which appeared on most cars last year, is now closed the special plate, although not all teams have taken advantage of this opportunity. There were changes in the composition of the pilot’s Williams. Venezuelan driver Pastor Maldonado, though irregularly spent last season, but still retained his place in the team, and the place of Bruno Senna took the young Finnish driver Valtteri Bottas, piloted last season on Fridays. The role of test driver Susie Wolff takes.