Formula One drivers are out practising for the second Grand Prix of the season in Malaysia.
Lewis Hamilton is hoping to bounce back after being disqualified from the Australian Grand Prix. He's clocked up the seventh fastest time in practice.
Jenson Button, who tops the leader board after winning in Australia, was third fastest after the practice laps.
Both Brits will have more chances to test out their cars later, before the big race on Sunday.
Lewis was third in Australia, but the points he won were taken away after the people in charge said he gave misleading evidence at a hearing after the race.