The Brazilian clocked an unofficial fastest time of one minute and 12.574 seconds as he completed 102 laps , autosport.com reported , with veteran Spaniard De La Rosa posting 1:12.784 . Lewis Hamilton makes impressive return to F1 in first day of official testing for 2010 . Seven -time world champion is third fastest in Spain , racing 40 laps for McLaren . McLaren 's Felipe Massa , making his comeback after 2010 out , is quickest in Valencia . World champion Jenson Button and Mercedes teammate Lewis Hamilton sit out session .
Lewis Hamilton makes impressive return to F1 in first day of official testing for 2010 . Seven -time world champion is third fastest in Spain , racing 40 laps for McLaren . McLaren 's Felipe Massa , making his comeback after 2010 out , is quickest in Valencia . World champion Jenson Button and Mercedes teammate Lewis Hamilton sit out session .