Robert Kubica says he understands why question marks remain over his ability and admits he would also have doubts about his return to Formula 1 if he was a team boss.
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 would also have doubts,” Robert Kubica said.
