Jacqui Ansin's Maserati had to be towed after hitting a mystery object that she believes fell on to the motorway in Auckland yesterday.
She was driving on the Southern Motorway about 3pm when, as she passed under the Grafton Rd over-bridge, she heard an "almighty thump".
Not knowing what had caused the noise, Ms Ansin said the whole experience was immediately overwhelming.
"You just don't know what's happened...Have I crashed?"
She felt as though the noise had come from underneath the car and this was confirmed when it then suddenly stopped.