FRIDAY PRACTICECAR 1, SEBASTIAN VETTEL First Practice Session: Position: 2, Best Time: 1:39.667, Laps: 20Second Practice Session: Position: 2, Best Time: 1:38.781, Laps: 30“There is some room for improvement. It will be close with Mercedes; of course we’re not sure what others were doing with their fuel loads today, but it seems close ahead of tomorrow’s qualifying. I like the track here, it’s a shame it’s so far from Seoul, which is a great city, but it’s good coming here as it’s quieter than some other races, which means we can focus on our job.”CAR 2, MARK WEBBERFirst Practice Session: Position: 3, Best Time: 1:39.816, Laps: 19Second Practice Session: Position: 4, Best Time: 1:38.844, Laps: 35“We need to work on the balance; it’s more about understanding the tyres again and getting those working as well as possible. We need to work on both the short and long run balance, as obviously I’m going to be out of position after qualifying. We need to have a car which can be strong in the first sector, so we can get some overtaking done.”