Greater Manchester Police (GMP) has released the CCTV image of the car involved in the shooting of mother and son in Salford.
The officers investigating the shooting are appealing for witnesses and information about the car that was seen in the area at the time of the offence.
A black Audi S3 was seen at 8.35pm on Monday 12 October 2015 on Dover Street in Eccles and left a few minutes later.
The car returned to Dover Street at 9.20pm just prior to the shooting, which happened at 9.25pm on Gillingham Road.
Moments afterwards, the suspected offenders made off in the Audi from Dover Street and travelled at speed along Worsley Road.
Detective Chief Inspector Paul Parker said: “It is believed the Audi drove at high speed close to a motorcyclist on Worsley Road causing him to pull over.
“If this was you, or you remember seeing a black Audi S3 parked up on Dover Street or travelling at speed on Worsley Road, please get in touch with police.
“We are also trying to trace the occupants of a small dark coloured hatchback saloon that had a broad stripe running diagonally from the front door over the wheel arches.
“The Audi was seen to pass this vehicle at speed on Worsley Road after the shooting.
“Any information received will be treated in strictest confidence”.
Christian Hickey, 8, and his mum Jayne, 30, were shot on the doorstep of their home in Salford after answering the door to two men.
After a brief conversation, one of the men fired a number of shots which resulted in Jayne being hit twice in her legs and Christian being shot once in his leg.
After numerous surgeries both have now left hospital and are recovering.
The first offender is described as white, between 19 and 20-years-old, of ‘chunky’ build and wearing a baseball cap. He spoke slowly and with a Salford accent.
The second man is described as white and was also wearing a baseball cap.