Police are continuing to investigate a high speed crash on Auckland's Northwestern Motorway on Saturday night

A white Mercedes was seen weaving in and out of traffic on State Highway 16 just after 8pm -- before veering off down Hobsonville Road.

The car reportedly rammed into another car before hitting a traffic light, where the occupants are believed to have run off.

Nobody was injured, but Police want to hear from anyone who saw the crash, or the reckless driving beforehand.