Tech blog day four: Wet towels required

Tech blog day four: Wet towels required

As the first Formula 1 test of 2013 came to an end, technical guru Craig Scarborough checked out teams' unusual cooling and secrecy techniques, and sussed out Mercedes' new DRS accessory

Wet towels required - Friday February 8

The first test of the Formula 1 season is over. Now teams will return the cars to the factories to be stripped, checked and rebuilt in time for the next test at Barcelona.

Over the four days most teams have been able to complete a surprising amount of mileage with relatively few red flags.

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