Day February 4 Mercedes team officially unveiled its new car W04 on the starting line at Jerez Circuit, where tomorrow will start the first test session before the season 2013. New car Mercedes W04, as well as most of the cars of the new season, is evolutionary in nature, because of major changes in the rules has occurred. Nevertheless, the team hopes to close the gap on rivals and leaders of a fight. It is noteworthy that the journalists saw W04 before the official presentation. In the morning, Nico Rosberg brought the car to the track to test its basic systems. Compared with last year, the car was allowed to hide the step pad on the nose optekatele, a new exhaust system with the use of the Coanda effect, and a new five-element front wing. The new head of Mercedes Motorsport appointed Toto Wolff, who joined this must be from Williams, and among the new sponsors of the team appeared a Canadian company BlackBerry.