Two other officers arrived at the scene to impound Pusey's car. The four officers were struck by a truck in the emergency lane and all four were killed.
Pusey was uninjured and left the scene.
The court today heard the mortgage broker from Fitzroy was recorded on the bodycam of a dying Leading Senior Constable Lynette Taylor.
He allegedly told her: "There you go. Amazing. Absolutely amazing. All I wanted to do was go home and have my sushi. Now you've f****ed my f***ing car."
AAP reports Constable Taylor could be heard groaning for help.
Pusey did not apply for bail and was remanded in custody to appear in court again in July.
Police have not yet spoken to the driver of the semi trailer, a man from Cranbourne identified as Mohinder Singh Bajwa.
Deputy Police Commissioner Shane Patton said this morning Bajwa was not yet in a position to speak with officers.
The four officers killed in the crash have been identified as Leading Senior Constable Taylor, Constable Glen Humphris, Senior Constable Kevin King and Constable Josh Prestney.
Last night, they were remembered during a tribute in which several Melbourne CBD landmarks were bathed in blue light.
An in-memoriam page set up by Victoria police was flooded with tributes.
Last night, Victoria Police Chief Commissioner Graham Ashton said the freeway's cameras and bodycam footage from the officers contained "quite illustrative" evidence of what happened.
"We've got a lot of evidence to piece together and while we currently don't know [what caused the crash], we will know before too much longer," he told A Current Affair.
According to 7News, Pusey was not in the path of the truck that killed the four officers because he was urinating on the side of the road at the time.
Detectives are still investigating the tragic crash that led to the single biggest loss of lives in state history.
Commissioner Ashton said the semi trailer driven by Bajwa "appears to have moved from one of the traffic lanes of the freeway into the emergency lane and travelled a short distance in the emergency lane at around 100km/h".
He said Bajwa suffered a "medical episode", "which seemed to involve him blacking out".
"The investigation into the exact cause of the collision remains ongoing," the force said in a statement.
"Anyone who witnessed the incident or with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au."
— with AAP
