Police have appealed for witnesses or dash cam footage following a crash in Peterborough last month.
Warrnambool highway patrol said a silver Ford sedan with two occupants struck a tree on the Great Ocean Road about 11pm on December 31.
The driver of the Ford was taken to hospital with non-life threatening injuries.
The passenger was taken to hospital with serious injuries.
It is believed a second vehicle, a red Jaguar, was travelling closely behind the Ford when the crash occurred and the driver stopped briefly at the scene, speaking with witnesses before leaving.
Police wish to speak with the driver of the red Jaguar and anyone who may have witnessed the incident.
Anyone with information or dash cam footage is urged to contact Warrnambool police 5560 1333 or Crime Stoppers on 1800 333 000.
Confidential reports can also be submitted online at crimestoppersvic.com.au.
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