POLICE are still investigating the high-speed crash that killed two men and seriously injured another early on New Year's Day.
A blood sample has been taken from the sole survivor of the tragedy - the 18-year-old driver - who suffered a fractured skull when he lost control of his Subaru Impreza, which struck a gutter and rolled several times.
The results from the sample are yet to be confirmed.
In the meantime, police from the Criminal Investigation Branch will assist in interviewing people who have come forward with information since the crash was reported on Tuesday.
A Blackstone man aged 19 and a 28-year-old New Zealand man were killed.
Inspector Dave Preston said several people had reported seeing the vehicle travelling through the Ipswich area in the minutes leading up to the fatal incident, which occurred on Glebe Rd, Booval about 4.45am.
"A number of witnesses have come forward and provided information on the vehicle's speed," Insp Preston said.
"Detectives will help us to obtain statements from these people."
The forensic aspect of the investigation is also continuing, with police trying to piece together evidence which could help provide an explanation as to what led to the tragedy.
The Queensland Times understands that there were skid marks of about 140m on the road at the crash site.
Police said it was too early to speculate on the speed at which the vehicle was travelling.
They refuted reports that the vehicle involved was a high-performance model.
Insp Preston said the car was a standard, non-turbo, four-cylinder.
Mayor Paul Pisasale, who met with family of the deceased this week, said he would be pushing for increased defensive-driver education for teenagers as part of the school curriculum.
"I was on television early (Thursday) talking about it and I received a number of emails afterward from people wanting to be a part of it," Cr Pisasale said.
"We are not going to blame the government for this, but let's look at what we can do as a community.
"I never knew why my parents were so worried about me driving until I had kids myself."