McLaren: An extremely productive day 20 February, 2013 Sergio Perez Sergio Perez concluded his running at the Circuit de Catalunya, racking up 97 laps after an extremely productive day. As usual, the morning kicked off with a series of shorter runs, aimed at gaining the engineers a better understanding of the car’s track-to-tunnel aero correlation and its reaction to a series of mechanical set-up changes. Into the afternoon, the team ran through a number of longer runs – these were aimed at providing Sergio with a better understanding of the methods and systems that will be used by the race team during a race weekend, including cockpit switch adjustments and understanding radio messaging. What’s next? Jenson Button kicks off his running at Barcelona tomorrow. His programme will pick up where Checo’s left off, including further correlation and set-up work. With poorer weather on the horizon for Friday, the team will monitor the forecast and may choose to adapt the programme in order to optimise track time over the next two days.