When Hayden Currie T-boned another car at 149km/h, killing two people and paralysing his friend, he didn't call triple-zero.
He called his father about his car then phoned a mate to say he'd had a bad accident.
Currie, now 20, was doing 168km/h in the suburban Melbourne street last September with three passengers in the car before he slammed on the brakes.
He regularly drove at extreme speeds - a dashcam showed him hitting 178km/h just weeks earlier.
Shannon Juriansz was driving his prized Nissan Skyline to help a friend when Currie's car smashed into his drivers side, crushing it.
The car burst into flames and the 20-year-old died instantly.
Currie's car crossed a concrete barrier. In the back seat were his friends Lucca Smeraldo and Jacinta Barnett.
Ms Barnett, 19, was rushed to hospital with significant injuries. She went into cardiac arrest in the ambulance and was taken straight into surgery but died a short time after.
Mr Smeraldo, then 18, suffered a spinal fracture and is now paraplegic. His jaw and ribs were also broken and he continues to suffer from serious ongoing health issues as a result.
Front seat passenger Elizabeth Jackson suffered a broken sternum while Currie escaped with minor injuries.
Mr Smeraldo told police that Currie had a reputation for breaking the speed limit. He said he often told Currie to slow down.
Dashcam analysis found he'd hit high speeds 13 times in the previous weeks, including 178km/h while drag racing in a 70km/h zone.
Ms Barnett's mother said she hoped her daughter's death sent a message to young people to really trust their drivers.
"You were responsible for keeping your friends safe," she told Currie in the County Court.
"You killed two people, you paralysed your best mate - why can't you take responsibility for the hurt you caused?"
Mr Juriansz's brother said they'd aspired to run their own car business together, having worked together on the Skyline. They wanted matching cars when they were older.
"I don't think I can do it myself," he said.
Currie has written an apology letter to the families and has shown remorse, his lawyer David Hallowes QC said.
He pleaded guilty to two charges of culpable driving causing death and one each of negligently causing serious injury and two of reckless conduct endangering death.
Currie has ADHD. Psychiatrist Danny Sullivan said impulsivity and thrill seeking were related and while there was a correlation generally between poor driving and ADHD it wasn't specific in Currie's case.
Currie will be sentenced at a later date.