A woman managed to drive 70km across the Waikato nearly four times the legal alcohol limit with her two kids in the car.
And Waikato police are now praising the member of the public who spotted the woman's Suzuki Swift driving erratically near Te Awamutu.
Police said they were first alerted to the woman's poor driving on State Highway 3.
A short time later the car was stopped and inside was an alleged drunk 28-year-old woman with two children in the car.