F1 testing pictures: The cars on track
18:12, UK, Monday 22 February 2016
The best of the imagery from the first day of pre-season action at Barcelona as testing commences at the Circuit de Catalunya
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Daniel Ricciardo debuts the Red Bull
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Valtterri Bottas cuts through the evening dusk in his Williams
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Sebastian Vettel went quickest shortly before the lunch break
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The day began with the launch of the Haas team and their first F1 car
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Vettel impressed for Ferrari
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Hamilton waves to the fans during the lunch break
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Vettel was half a second clear at the top of the timesheets
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Hamilton was a centurion for laps completed in Barcelona
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Pascal Wehrlein debuted for Manor
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Jenson Button also completed more than a race distance in the McLaren
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Romain Grosjean missed much of the afternoon after a front-wing failure
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World champion Hamilton completes his day's work
The Sky Sports F1 Digital team will be providing live commentary from dawn until dusk on all four days of both Barcelona tests while Sky Sports News HQ will also deliver live updates from trackside.