@Raj: Usually it is one for the drivers to share. By this stage there might be a spare or second chassis. Come Australia the well-healed teams will have at least three or maybe four. Accidents and faults then tend to dictate how many more chassis they produce over the rest of the year.
@steve: Unfortunately not. However, it is pretty dull watching cars go round and round all day (and often there are no cars on track at all). FOM are doing some filming here as well as the TV crews from Sky and others, but it's not like a race weekend with cameras at each corner.
@hardik: I've heard a lot about this special paint. Maybe I'm not very observant, but it didn't look that different to me when I was in Jerez.
@hardik: I believe it was a photographer who came up with those theories and they get to see the cars close up a lot of the time. I suspect it's more about sponsors than aero gain, but it's true that teams are fastidious about getting a perfect paint finish (or sometimes having no paint at all) for aero purposes.
Vettel is back up and runnning by the way. He's just completed his third lap of the day.
@F1_v10: I don't think McLaren is holding anything back on purpose. If they could get the Honda engine running at 100% they would do it immediately. Finding problems is what testing is all about, but you can't do that without pushing the car to the limit.
@hardik: It should be fitted to the car today. An impressive two-day turn around to diagnose, re-design, manufacture and send a new part to the track.
@hardik: We are expecting a bit of rain later today at some point. It's not raining right now.
@hardik: Manor can miss three races this year and still be eligible for prize money. If they can get the 2014 car to pass the necessary crash tests they might be able to run it in Australia, but the politics of F1 are grinding away in the background, so it's hard to say for sure if they will make the grid even if they manage that.
We have another red flag.....
Looks like it's Button in the McLaren, he's pulled to the side of the road at Turn 7.
Maybe it's that pesky Ron Dennis playing tricks on us all again.
@ankur: It's entirely possible Honda has something the others do not, but Mercedes set a pretty high benchmark with last year's power unit and will only raise the bar again this year. But Honda started to design its engine two years ago, so it's questionable how much it was influenced by the others.
@SteveTaro: I believe it's on the car now, although clearly something still isn't quite right with the MP4-30.
@SD: Not 100% indicative because more parts will come to the cars ahead of Melbourne and it's possible to run ballast/more fuel than necessary. But the race sims give the best indication at this stage.
@hardik: I'm 99% certain it has nothing to do with it.
@Behzinga: Here's what Force India chief race engineer Tom McCullough said the team achieved yesterday: "Our main objectives of the day were for Sergio to get to know his new engineering team better, in addition to lots of setup and procedural work. We continued the evaluation of the 2015 Pirelli tyres we started yesterday, working through performance running in the morning and long runs in the afternoon. The data we gathered today will be really useful not just for the first few races, but also for the final test next week. We are looking forward to continuing our testing programme over the final two days."
The track has gone green but there's no rush to get back out there again.
@SteveTaro: They also continued to work on a variety of projects in their R&D plant, including the 2009 car for longer than you might expect for a company that had left the sport. They may well have something up their sleeve this year.
Pascal Wehrlein - whose name nobody seems entirely sure how to pronounce - heads out on track. The German youngster driving for Force India today.
As someone in the press room here has pointed out, that picture of Button looks like he is tickling a marshal's ear with a long, red stick. I can confirm that wasn't the case.
Hamilton and Vettel - winners of six of the last seven world championships between them - are lapping fairly closely to each other out there. Hamilton has just crossed for lap 22 of the morning.
@ankur: I think it's something we should approach with caution. 1000bhp is all well and good, but it won't be that obvious on TV and could be pretty expensive if it's approached in the wrong way. Costs and the health of the smaller teams should be the first consideration