They were the only people in the vehicle.
A Lowe Corporation Rescue Helicopter spokesman said the teenage girl had minor injuries and was flown by the Palmerston North Rescue Helicopter to Hawke's Bay Hospital.
"A male patient, in his 50s, was freed from the vehicle, then flown to Hawke's Bay Hospital in the Lowe Corporation Rescue Helicopter."
As of yesterday afternoon the female teenager had been discharged, according to a Hawke's Bay District Health Board spokesperson.
The man had multiple injuries of a serious nature and was in a stable condition in hospital.
A resident of Hatuma Rd who lived not far from the accident scene was not at home yesterday, but said she was not surprised to hear there had been an accident on that road.
"It was bound to happen, people are always zooming along there," she said, although police had not said whether speed was a factor with this crash.
JG Wilson Dr resident Kim Grant said she was out riding her horse and heard a noise that made her think something was up, and then heard a horn blaring.
"We went straight down, I was second on the scene and then luckily a nurse turned up as well - I stayed with the man the whole time until the helicopters arrived."
She said she had spoken to the man's wife since the accident who said he had pelvis and leg injuries.
He was being treated and would recover in time, and the girl, who was his daughter, was also recovering and had been cleared of spinal injuries, which was an initial concern.
She said the accident happened on a straight road, and it was not a known danger spot to residents.
Police said it may take some time to work through what caused the crash.