He then spun his vehicle around and continued following their ute towards the Southern Motorway, heading north, she said.
As both vehicles reached Lookout Point, the man stopped his vehicle and got out. He then repeatedly punched the ute the woman was travelling in, she claimed.
The group kept driving.
The man returned to his Mazda and continued to follow them.
At this point, he began yelling out the window of his vehicle and waving a tyre lever, she said.
The woman said he appeared to be "high as a kite".
"I've never seen anything like it."
She began remonstrating with the man from the window of the ute.
"I wasn't having that.
"I said, 'I'm calling the police. You're a psycho'."
At this point the man drove off, she said.
A police spokeswoman confirmed they responded to reports of a male driver punching a vehicle, but he had fled by the time they arrived.
She understood he was still at large.