Police have released the name of the woman was killed after being hit by a car in the Auckland suburb of Ōrākei on Sunday morning.
Remuera woman Jeanette Grice, 60, was walking with a man along Shore Rd, outside the Palmers Garden Centre, when the incident happened.
The man remains in hospital in a serious condition.
They were hit by a Jaguar - which witnesses say became out of control when the driver accidentally accelerated while in reverse.
A witness told Newshub the car was spinning in the middle of the road, before accidentally reversing onto the pavement, hitting the two pedestrians.
This has not been confirmed by police.
Harry Brar works at Palmers Garden World. He was one of the first on the scene after the accident.
"I saw the guy - he was bleeding from the head. And I just removed my jacket and put under the head of the guy," he says.
Mr Brar says it was obvious the man was in pain but he just kept asking about his partner.
"Then I saw the lady - she was in between the tree and the car - I take my phone and just rang police to get help," he says.
The woman died at the scene.
Newshub has been told the driver who hit them had just dropped her son off to work at Palmers Garden World. The driver is uninjured, police say.
Palmers Garden World owner Delma Harrison says three of her staff members witnessed the accident. She says it was very distressing.
"They have been interviewed by the police and have chosen to return to the garden centre," she says.
"The police have assured me that tomorrow morning they will be contacted by the crisis team who will look after them."
Traffic was heavy as there was a triathlon event nearby along Tamaki Drive in Mission Bay.
Police haven't yet laid any charges.