Get involved #bbcf1published at 15:55 Greenwich Mean Time 4 March 2016
What have you learnt from testing?
Final day of pre-season testing
Sebastian Vettel fastest in the morning
Vettel tests 'halo' head protection device
Transmission problem for Hamilton before lunch
Get involved #worsteverF1mods
Gary Rose
What have you learnt from testing?
And just as I posted that entry, Haas tweet this.
Hmmm, Romain Grosjean is done for the day and Esteban Gutierrez doesn't appear to have done any laps in the Haas this afternoon.
All smiles one hour ago...
Some small improvements from Nico Rosberg, his latest lap a 1:27.472. He is still behind Rio Haryanto.
Imagine saying that come the actual season, although I suppose with the new qualifying format it could happen...
What have you learnt from testing?
Sebastian Vettel completes his 67th lap of the afternoon and pits. That's the end of his race simulation.
Felipe Massa, meanwhile, has joined the Friday 100-lap club.
Here are the aforementioned bread slippers.
Amazing scenes.
Right, we are into the final 90 minutes of testing. I know, I know, wipe that tear from your eye.
What I want to know now is, what have you taken from testing?
Anything and everything you have learnt - from what your expectations for the season are to the revelation that there is such a thing as bread slippers - let me know via #bbcf1., external
It is Sebastian Vettel who is pounding the track today. Combining the Mercedes lap count and they are on 98 for the day, while Vettel is onto lap 110.
The Ferrari man is well into his race simulation at the moment, lapping in the low 1:29s.
1. Sebastian Vettel 1:22.852 108 laps
2. Carlos Sainz 1:23.134 93 laps
3. Felipe Massa 1:23.644 94 laps
4. Sergio Perez 1:23.721 60 laps
5. Lewis Hamilton 1:24.133 69 laps
6. Daniel Ricciardo 1:24.427 90 laps
7. Jenson Button 1:24.714 88 laps
8. Jolyon Palmer 1:24.859 57 laps
9. Marcus Ericsson 1:25.031 76 laps
10. Romain Grosjean 1:25.255 66 laps
11. Rio Haryanto 1:25.899 22 laps
12. Nico Rosberg 1:28.165 29 laps
F1 journalist Dan Knutson in Barcelona: "Sebastian Vettel is doing a race simulation in the Ferrari. A crew guy is showing him the pit board which is counting down the laps, and showing him that he is in P1!"
We haven't seen much from Felipe Massa today...until now.
He's just gone third fastest, clocking 1:23.644. That was on the super softs, almost eight tenths of a second slower than Sebastian Vettel's time on the same compound.
F1 journalist Dan Knutson in Barcelona: "When Formula 1 returns here in May, this open terrace on top of the pit building is where the exclusive Paddock Club hospitality suites will be located. It is where the teams and sponsors entertain their most important guests during the Spanish Grand Prix weekend.
"The club’s website shows the prices per guest at £735.94 for the Friday, £3,029.47 for two days; and £3,593.92 for three days.
"The price includes fancy food and drink, a place to relax and a view of the main straight and pits, a pit lane walk, access to a grandstand plus, and this is the clincher, a free race programme.
"The most expensive Paddock Club admission is, naturally, Monaco where a two-day pass costs £4501.33."
Rio Haryanto has sent Nico Rosberg to the bottom of the timesheet.
He's got the purple-walled ultra soft tyres on the Manor and improves with 1:25.899 to move up to 11th. That's his best time in testing so far.
The modern day equivalent?