Police are investigating the circumstances of a collision that occurred on Liverpool Road in Kilsyth at about 3.20pm on Saturday 27 September.
The driver of a blue Nissan sedan travelling north between Scenic Rise and Glasgow Road lost control and impacted a tree.
The driver was conveyed to hospital via air ambulance with suspected life-threatening injuries.
Anyone with information or dashcam is requested to submit a Crime Stoppers report: crimestoppersvic.com.au/report-a-crime/
Please use reference: T20250025428.
The road was closed for several hours to allow the scene to be examined.