The incredible moment police smashed their way into a woman's sinking BMW with a rock and dragged her to safety seconds before she ran out of air after she drove off a pier

A woman is extremely lucky to be alive after her car drove off a rock wall of a car park and into a harbour and began sinking. The petrified woman was squashed up against the rear window as the front end of the car was submerging in the Waitemata Harbour in Auckland at 3pm on Tuesday. But two quick thinking policeman dived into the water to save her, one attempting to break the glass with a baton, before the second officer broke the glass with a rock pulled from the water