Police are trying to trace the driver of a car that was seen in the Total Garage forecourt on High Street in Bawtry, between 12.02am and 12.10am on New Year’s Day.
Officers believe whoever was in the car at that location would have had sight of the attack on 35-year-old Iain Eldridge, and may be able to help with the investigation.
A 21-year-old Bawtry man has appeared before Doncaster magistrates charged in connection with the attack, which has left the victim critically ill in hospital.
Iain Eldridge suffered a severe head injury in the attack outside the Penny Farthing pub in Bawtry just after midnight on Sunday 1st January.
Paul Oakden from Kingswood Close, Bawtry has been charged with grievous bodily harm.
He was remanded in custody on Monday to reappear before magistrates on 17th January.
Mr Eldridge, from Auckley, was initially taken to Doncaster Royal Infirmary but later transferred to Sheffield’s Royal Hallamshire Hospital where he remains in a critical condition.
Anyone who can identify the car or the people in it are asked to call South Yorkshire Police on 101 quoting incident number 87 of Sunday 1st January.