Could have been worse - it could have been foggy as well. Just look at what the drivers had to contend with at Mt Panorama, Bathurst, today, in the first practice session for Sunday's race:
Another view, this time of Moffat's car with a Team Vodafone car in hot pursuit across the top of the mountain:
More rain is predicted for tomorrow and Saturday, but race day is supposed to be fine. I hope they got that right.
ETA: Credit for photos and copyright Edge Photographics