Two men were badly injured when a blue Holden Commodore collided with a yellow 12-tonne Mack truck heading south about 2pm on August 7.
The Commodore rolled and landed on its roof in blustery and wet conditions near Warwick Road.
The 58-year-old driver of the car suffered serious hand and arm injuries, while his 53-year-old passenger has spinal damage.
Peak-hour afternoon traffic was backed up for hundreds of metres as police closed the scene for almost four hours. Witnesses can call Crime Stoppers.