This one has got the ingredients of a wild race.
We had a rained-out Friday, during which the meaningful laps were all on wet-weather tyres or intermediates, and the forecast is for more rain in free practice on Saturday morning, followed by a dry qualifying and race.
If it pans out this way, teams will be left with no information about tyre behaviour for a race in which this is going to be extra-crucial - given the aggressive choice by Pirelli of the supersoft/soft combination, and a 'green' track that's likely to aggravate tyre wear.
Schumacher topped the first practice session for Mercedes © LAT
What action we saw on Friday had Michael Schumacher's Mercedes quickest of the wet-tyred running in the first session, and Lewis Hamilton's McLaren at the head of the inter-shod runners later on, around 12 seconds quicker. Even though the rain eased off, the track was never quite dry enough for slicks, although both McLarens, Mark Webber's Red Bull and the two Toro Rossos all gave it a go right at the end, this resulting in various spins and abandoned laps.