Jarno Trulli set the fastest time in the final practice session before qualifying for the Japanese Grand Prix at Suzuka.
The veteran Italian was down the time sheets until his final run, which looked like a low fuel qualifying simulation. No many drivers did one of those; Nico Rosberg, Romain Grosjean certainly did.
It was a frantic session, because yesterday was largely lost to rain. The teams and drivers had to get a lot of set up work done in just one hour for both qualifying and the race.
Sebastien Buemi in the Toro Rosso led the way for much of the session, working the lap time downwards. He finished 2nd, with Sebastian Vettel 4th in the sister Red Bull car fourth. Early indications are that this car is looking good here. However Mark Webber crashed his car at the Degner curves, hitting the barriers quite hard and losing set up time.
The two title contenders put in 49 laps between them in what looked like a co-ordinated programme with Button doing longer runs on both types of tyre with an eye to the race and Barrichello possibly looking at Q3 set up. Both cars looked well balanced and competitive and could challenge at the front.
Also very strong was Kimi Raikkonen in the Ferrari which was not expected to be competitive here as the team has stopped development over two months ago. He could spring a surprise this weekend.
Timo Glock was back in the Toyota having missed yesterday due to a fever.