A woman seen driving with a child in a Spider-Man suit in her car on the 2014 day William Tyrrell disappeared has been asked to come forward.
The inquest into the disappearance of William Tyrrell has implored a mystery woman to come forward after a witness said he saw her driving away from the Kendall area with a small boy on the day the toddler vanished.
Local resident Ronald Chapman says he saw a woman drive past his Laurel Street home in the NSW mid-north coast town on September 12, 2014, with a boy dressed in a Spider-Man suit in the back seat.
William was three years old and wearing a Spider-Man suit when he went missing from his foster grandmother's home that same day.
After Mr Chapman gave evidence on Wednesday, the counsel assisting the coroner, Gerard Craddock, made a plea for additional information.
"If there is a lady out there who was driving a ... car with a child in the car, we do want that person to come forward," he said.
Mr Craddock's request brought the inquest to a close for 2019. It's set to resume in March 2020.
Ten days ago, Detective Sergeant Laura Beacroft told the inquest she didn't believe Mr Chapman was making up the story.
Laurel Street sits between Benaroon Drive - where the foster grandmother's home was - and the Pacific Highway on the eastern side of Kendall.
It links to Benaroon Drive via Batar Creek Road.
Det Sgt Beacroft said Mr Chapman believed the car - and another he saw following it - may have been driving in convoy but could have just been heading in the same direction at the same time.
She said she wasn't sure if he provided a description of the person driving the second car.