Robert Kubica says he understands why question marks remain ov🎃er his ability꧙ and admits he would also have doubts about his return to Formula 1 if he was a team boss. 

The 35-year-old Pole will complete a remarkable comeback to F1 with Williams in 2019, eight years after suffering severe injuries to his right arm that cut-short his promising career in the sport. 

Kubica, who tested for Renault and Williams throughout 2017 and 2018, said he has🏅 come to accept why people had struggled to believe a return to grand prix racing was realistic, having been absent from the F1 grid since🎉 taking part in the 2010 Abu Dhabi Grand Prix. 

"If I would be a team principal I wou𓂃🦩ld also have doubts," Kubica said.

"This year has been very useful because at the first meeting, I remember, I said 'If you have an🧸y doubt, we shouldn't be doing it, because in diff🐠icult times it's easy to point the finger on my arm - I want to make sure that you are sure that I can do it'.

"First of all I have to be sure that I can do it, that's why I'm here, but second of all the team has to be convinced that I'm a💙ble to do a job."

The 2008 Canadian Grand Prix❀ winner believes his comeback shows everybody, including those that did not believe a return was feasible, that “nothing is impossible”. 

"If I think I will not be able to drive competitively fast I would not be here," he explained🎃. 

"This is a normal way of thinking, that people see my limitationsܫ and they ask how it's possible that I do it.

"I know that it's hard to believe but Williams has seen it this year and I have seen it [for] the last 🍬16 or 18 months, since I first tested an [older Renault] F1 car in Valencia that I can do it.”

Deputy tea🌄m principal Claire Williams praised Kubica’s determination to return to F1 on a full-time basis and is confident he will help the British squad - which slipped to the bottom of the constructors’ championship in 2018 - turn around its fortunes🎀 next season. 

“He has an amazing spirit and a fantastically tenacious personality and hugely passionate about Formula 1 and his trai𓂃ts combined make him a driver we’re really looking forward to working with next year,” Williams said. 

“That ta🧜lent that we know Robert has means we’re really excited that he is going to be bringing that to Williams next year. 𝓡;

“His intelligence in the cockpit and his engineering ability we believe i✱s really going to help us drive this team forward as we start a new chapter for this team in 2019.”