''It was a very dangerous situation,'' Lawgun said.
The silver hatchback Fiat was extensively damaged, a fence broken and branches torn from trees on the park's steep garden adjacent to Bank St. Despite what appears to have been an out-of-control situation, there was no initial evidence to suggest speed was involved, Lawgun said.
''Our main concern is finding the driver and making sure that person is okay.''
The police would contact the registered owner of the car and ''work back from there.''
There was no indication the vehicle was stolen, he said.
A tow truck operator dragged the Fiat out of its position against the rock wall at around 9.30am, and Whangārei District Council contractors repaired the broken fence on Bank St above.
A spokeswoman said the council was not too concerned about the damage caused to trees or tyre marks left on a grassed area as the car was removed.
''Accidents do cause damage. We accept that and do have contingencies in place for when it happens,'' the spokeswoman said.