Head of race engineering Guillaume Rocquelin reflects after the first day of testing in Barcelona: “We had a good start to week two. We got through 85 laps in the morning and everything was running very smoothly. We got a long way through the test programme then, so we were able to try out some things in the afternoon and we took the decision to do some shakedown tests and the result was small electrical problem.”

“We lost an hour as we had to change the battery but it was a calculated risk and we learned something as a result.

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