Ferrari's Sebastian Vettel fastest on day two
Mercedes' Valtteri Bottas second, McLaren's Stoffel Vandoorne third
Williams' reserve driver Robert Kubica faster than team-mate Sergey Sirotkin
Red Bull's Daniel Ricciardo was fastest on day one
McLaren's Fernando Alonso spun and lost a wheel on day one
Get involved: How would you spice up testing? #bbcf1
Sebastian Vettel goes even faster. He is now half a second faster than Mercedes' Valtteri Bottas in second. Vettel's top time is 1:19.673, compared to Bottas' 1:20.270 (both set on softs).
Image source, Getty ImagesHow would you spice up testing?
James Agar: Add a fanzone, some guided tours and some music.
Tom Cerson: Stream it on youtube like Indycar do.
Richard Khan Jr: By not having any. Start the season now and the teams have FP1, 2 & 3 to get their new 2018 cars into gear and ready. That will definitely spice thing up! You can see from the cold conditions that they have now that no times are representative and they only testing parts.
And some more information on Robert Kubica's first pre-season test in seven years.
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A Williams comparison.
Yesterday, Lance Stroll was ninth fastest on the soft tyres, with a time of 1:22.452.
Today, Sergey Sirotkin is seventh fastest (also on softs) so far after 52 laps and a best time of 1:21.822.
After 17 laps today, reserve driver Robert Kubica (also on softs) is ninth quickest and has produced a time of 1:22.142.
Image source, Getty ImagesLance Stroll (left), Sergey Sirotkin (centre) and Robert Kubica
Image source, Getty Images#bbcf1
Lex: Kubica is setting competitive times, all is good in the world, the F1 gods have blessed us.
Image source, Getty ImagesWoah! This was nearly an absolute disaster for Kevin Magnussen. He spins, loses it and has to do everything he can to stop himself slamming into the tyres.
A lucky, lucky escape. Watch it with the video below from the Formula 1 Twitter account (click on the link).
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Who wants to see some footage of Robert Kubica in Formula 1 testing? Of course you do. Greg is in position to catch the footage.
Let's all hope we see Kubica in a grand prix sometime this season.
Great news too, as he has already gone faster than Charles Leclerc in the Sauber and Kevin Magnussen in the Haas. Kubica is sitting in ninth position after 10 laps out there.
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Dan Knutson
F1 journalist in Barcelona
Williams chief technical officer Paddy Lowe met the media upstairs in the team’s hospitality unit. Here’s what he had to say on Sergey Sirotkin and the new Williams FW41.
“Sergey is a very committed young man. He has done a very solid apprenticeship in motor racing. He is very ready to make that step up to F1. A great person to work with because he has a fantastic work ethic, and he is very mature for his age. He understands technical things very quickly. A very clever guy.”
“What you see in the car, there is quite a direction in the new packaging. Around the cooling in particular we found a lot more volume, which translated into performance. That doesn’t mean we are unhappy with last year’s car. It is part of progress. You have to keep finding lap time in this business in order to move forward and be competitive. So this was one of the directions we took.”
Image source, Dan Knutson#bbcf1
Josephat Okora: I really wish Kubica does better than the two Williams drivers. Go, man...all the best.
DavidStanley1: I cannot be the only one who would LOL if Kubica was faster today.
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Meanwhile, at the top of the times, Sebastian Vettel, who caused a red flag by going into the gravel earlier on, has just shaved 0.053 seconds off his best time. The time of the day is now his 1:20.115.
That was set on the soft tyres. All of the top 10 drivers have set their best times on the softs, apart from Stoffel Vandoorne in third (hypersoft) and Max Verstappen in fourth (medium).
This could well be the story of the day. Williams' reserve driver Robert Kubica has now gone on to the track.
Come on Robert, let's have some great laps.
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Dan Knutson
F1 journalist in Barcelona
After Leclerc caused the red flag by going off at Turn 4, his Sauber was hanging around pit lane.
Image source, Dan KnutsonWe already knew Mercedes would not be using Lewis Hamilton today, and they have gone on the defensive as to why there is no world champion today.
They write: "Mileage is king so we want to make the most of the current conditions. A driver swap would require switching our seat, pedals, even stickers when we could be out on track."
So now you know.
You can see Mercedes' tweet by clicking on this link.
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But don't worry, Sir Greg Kingston has come up with another taster for us. He has plonked himself on the grass at turn nine and you can watch his latest video by clicking on the link below.
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#bbcf1
Euan: Everyone who is wanting testing televised must remember that it would render this text commentary obsolete and we can't have that. #bbcf1, external.
Too right Euan. I've got bills to pay. Although it would be nice to not just be staring at the Formula 1 app on my I Pad. All day, non stop.
Here comes the sunshine. Finally.
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How would you spice up testing?
Mihir: One way to spice up testing is to have the grid for the Aussie GP (or starting GP) every year determined by testing pace. Let's see who will sand bag then to hide their pace from the other teams.
David Nimmo: Why would you try to "spice up" testing? If people want to follow it then fine, but this part of the season isn't for the fans, it's for the teams, so that they can put on a good show for the rest of the year.
Gav: Spice up testing with a ten lap race involving just the reserve driver from each team during each lunch break no prize just bragging rights.
Image source, Getty ImagesWe have been mentioning the fact that we have had snow and cold temperatures in Barcelona.
Well the official Twitter account for the Bahrain International Circuit has been in touch with us to highlight just how the weather there compares to the weather in Spain.
Cheeky.
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We have had Kevin Magnussen and Charles Leclerc in the gravel. We have also had Sebastian Vettel in there as well. That brought out a red flag, but it does not take long before we are back under way.
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