Mercedes GP boss Ross Brawn says everyone is tolerant of practical issues that have been encountered so far at the Indian GP track.

Brawn: The track is fantastic. You don't really know until cars start running around, what the track is like. But the track is fantastic. It has got an exciting combination of corners and straights. It has a very long straight and some very important corners, some combination of corners that will be quite tricky. The facilities are good. Clearly it has just been finished but we understand that and we are not criticising that. We know that next year there will be another step forward with the facilities because it has been a massive challenge for everybody to get it finished, so we are very tolerant and understanding of the situation.