Ferrari driver Felipe Massa continued to lead the way on the second day of Formula One testing at Valencia on Tuesday.
Massa set a fastest time of 1m 11.722sec - almost three-tenths of a second faster than his nearest rival, Kamui Kobayashi, who is driving the BMW Sauber.
The second day also marked a change in the driver roster, most notably with Lewis Hamilton taking over from McLaren test driver Gary Paffett to set third fastest time.
reigning world champion Jenson Button will drive tomorrow. Michael Schumacher is not driving today, but will be back in action on Wednesday.
1. Massa 1m11.7222. Kobayashi 1m12.0563. Hamilton 1m12.2564. Kubica 1m12.4265. Rosberg 1m12.8996. Barrichello 1m13.3777. Buemi 1m13.823