Pusey is accused of uploading four graphic images from the April 2020 crash to an insurance complaint to the Australian Financial Complaints Authority.
The images showed horrific injuries suffered by the four officers, and one of the pictures didn't even show the damaged Porsche, prosecutor Anthony Albore revealed on Tuesday.
Pusey, who uses they/them pronouns, is self-represented in a contested hearing, expected to last three days at Sunshine Magistrates Court.
They're challenging two charges of using a carriage service in an offensive manner, over the AFCA complaint and over a Google review posted about Porsche Centre Melbourne.
It's alleged Pusey used an image of Leading Senior Constable Lynette Taylor on the roof of the car as the profile picture for the review.
Pusey allegedly complained about the level of customer service provided by Porsche Australia and their insurance not being paid out, Mr Albore said.
A member of the public complained to police about the review.
Five witnesses, including the officer who received the complaint, will be called in the hearing before magistrate Michelle Mykytowycz.
Another officer will also be called to give evidence about an Instagram account allegedly operated by Pusey.
That account shows Pusey had access to at least one picture of the damaged Porsche which was not graphic and did not show the scene of the Eastern Freeway crash, Mr Albore said.
Prosecutors say Pusey could have used that in the Porsche review of AFCA complaint.
An AFCA employee who received Pusey's complaint told prosecutors he felt physically ill when he saw the images.
In the complaint Pusey allegedly claimed "nobody wants to own the (insurance) claim".
"A truck mowed down four hero road safety officers … and now these c***s (the insurers) won't pay up," they allegedly wrote.
Pusey sought $2.2 million in compensation.
AFCA closed Pusey's file, alleging the images amounted to egregious conduct.
Pusey is also facing two charges of committing offences while on bail.
Asked to respond to the prosecution case, Pusey said "they are telling a story".
They have pleaded not guilty.