He spun his vehicle around and continued following their car on to the Southern Motorway, heading north. As both vehicles reached Lookout Point, the man stopped his vehicle and got out.
He allegedly repeatedly punched the ute the woman was in. The group drove off, prompting the man to return to his Mazda and continue following.
The man had yelled out the window, 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 that point the man drove off, she said.
Police said the driver had fled by the time they arrived.