Having opted to sign Sergey Sirotkin as their second driver, Williams have handed Robert Kubica a test driver role for the 2018 F1 season.
The Polish driver had hoped to return to Formula 1 after suffering serious injuries in a rally crash back in 2011.
Having initially tried to land a Renault seat, Kubica turned to Williams and spent time behind the wheel of the FW40.
In the end, though, Williams opted to go with Sirotkin over Kubica.
The Pole, though, will be in the paddock as he has gined as the team’s official reserve and development driver with the aim of one day returning to a race-seat.
Kubica will take part in pre-season testing, the in-season tests and also a number of race weekend practice sessions.
“I’m extremely happy to be joining the Williams team as its official Reserve and Development Driver this season,” said the 2008 Canadian GP winner.
“I feel in the best physical shape that I have ever been, but it has taken a lot of work to get to where I am now, so I’d like to thank Williams for the opportunities they have given me so far, and for putting their faith in me with this appointment.
” I have enjoyed being back in the Formula One paddock over these past few months, and I now look forward to working with the Williams technical team, both at the factory and at the track, to really help push forward the development of the FW41 and to make a real difference to their 2018 campaign.
“Having driven both the FW36 and the FW40, I’m looking forward to seeing how the FW41 measures up on track and working with the team to ensure we can maximise the performance of the car.
“My ultimate goal remains to race again in Formula One and this is another important step in that direction: I cannot wait to get started.”