This was originally believed to be for precautionary reasons after Russell’s retirement, but in its post-race press release the team clarified it had stopped Kubica in order to save parts, given the busy flyaway race schedule.
Kubica’s own comment in the release echoed that explanation: “After George’s DNF, the team decided to stop my car, to take care of the parts that we have on the car.
In a tweet on Thursday morning Joanna Zakrzewska, spokesperson for Kubica’s sponsor PKN Orlen, said the company had asked Williams for further explanation.

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