A woman was pushed into her car and sexually assaulted at a train station car park in Melbourne's west, police said.
Detectives are appealing for witnesses to the attack at the Hoppers Crossing railway station about 3.30pm on November 16.
The 31-year-old woman was walking towards her car in the car park off the Old Geelong Road service lane when a man approached her, struck up a conversation, then forced her into her car.
Once inside the car, the man sexually assaulted the woman, then fled the scene, police said.
The male is described as Caucasian in appearance, aged in his late teens or early 20s, with long dark hair.
He was wearing a grey hooded jumper and blue jeans at the time of the incident.
Investigators have released an image of a man they would like to speak to about this matter.
Anyone with information is asked to phone Crime Stoppers on 1800 333 000.