Day 1 of 2nd and final pre-season test in Barcelona
Felipe Massa finishes the day fastest
Engine change for McLaren in the morning
Wehrlein drives Sauber for first time
Get involved #bbcf1
Here's the driver line up for this morning, with Lewis Hamilton taking the Mercedes out this morning and Valteri Bottas jumping in in the afternoon.
Mercedes: Lewis Hamilton Red Bull: Daniel Ricciardo Ferrari: Sebastian Vettel Force India: Esteban Ocon Williams: Felipe Massa McLaren: Stoffel Vandoorne Toro Rosso: Carlos Sainz Haas: Kevin Magnussen Renault: Jolyon Palmer Sauber: Pascal Wehrlein
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The green light goes on at a Circuit de Catalunya drenched in sunlight.
Jolyon Palmer, Felipe Massa and Pascal Wehrlein, who is getting his first taste of the Sauber after missing the first test because of injury, head on out.
In a little over two weeks, the 2017 Formula 1 season will get under way.
For some, it can't come soon enough...
Image source, Getty Images... for others, it's probably arriving too soon.
Image source, Getty ImagesBut first there's a final week of testing to come - a chance for those already looking strong to put down another marker and for those struggling a bit to maybe put things right.
Let's crack on.