It's chilly this morning in Barcelona despite being 7 degrees Celsius, slightly warmer than other mornings. The bizarre decision to have the fans on in the media centre probably isn't helping matters.
We're five minutes away from the start of testing.
McLaren was due to run Fernando Alonso only today but given the troubles of the last three days and the fact Button has done as many laps in two days as the Spaniard did in one, they'll split duties today.
@Mike: Nope, we have another four days at this circuit next week - Thursday - Sunday.
The session has started and eight drivers have all made an immediate journey onto the circuit. Alonso the only man still in the garage.
@speedtrap: One reason is for the fans - I can already see the grandstand opposite the pit lane is busier already today than it was yesterday.
@DarrenTaylor: The weather is expected to reach the dizzy heights of 15 degrees Celsius here.
Rosberg the initial pace-setter with a 1:36.200.
Red flag - Rosberg in the gravel.
Nope, looks like he's just dropped it under breaking and spun off the circuit.
@Keith: I don't think so. The team seems pretty happy that driveability-wise the car is good, and that when it's turned up fully it will be a good car. We saw Red Bull recover pretty well from an atrocious winter last year. McLaren isn't going to start challenging for podiums but as soon as they can get past set-up and configuration we'll really see where its potential is.
@Keith: He said at the time he signed for McLaren and he echoed the statement when he spoke to the media on Friday - he didn't join McLaren so he could have the best car in February. He knows the amount of potential in the McLaren-Honda and its a case of waiting until the car can be run at full beans.
Rosberg's car has been cleared and out come the green flags.
I'm very excited about Grosjean's chances as well. When you took away how badly the E22 was, Grosjean performed pretty well last year.
Vettel goes purple in all three sectors and jumps to the top of the timing screens with a 1:30.363 which at the moment is nearly six seconds quicker than Rosberg in second.
So there we have it - almost exactly the same reason for Vettel's spin yesterday.
Bottas has gone top now with a 1:28.868.
And he immediately lowers it to a 1:28.449.
@drynog: Haven't been out to trackside much yet (hoping to later) but its clear he handles the car very well through the corners from the shots I've seen in the media centre.