Police on Tuesday spoke with Rymer, whose vehicle was seized for forensic examination.
A crime scene was then established outside a location in Bounty Cres, Bligh Park.
Officers also set up another crime scene on Bonner Rd when a burnt-out vehicle was discovered.
A NSW Police spokesman said that vehicle had now been identified as a bright red/orange Ford Mustang, which has also been seized for forensic examination.
"Raptor Squad officers continue their inquiries into the circumstances surrounding how the man came to be shot and are appealing for anyone who may have been in the vicinity of Agnes Banks between 7am and 9.30am on Tuesday morning to come forward," the spokesman said.
"In particular, detectives believe someone may have seen the distinctive red/orange Ford Mustang in the Bligh Park or Agnew Banks areas around the time of the incident."