The vehicle stayed on the right-hand side of the road for a couple of blocks and then turned right into Crampton Road, followed closely by the patrol car with its lights flashing.
The constable said the car came to rest in a forestry camp and Greenwood staggered out of the vehicle, lifted out a washing basket and headed to the clothesline.
With slurred speech, she claimed that she was not the driver and was not obliged to comply with breath or blood-alcohol tests. She was then charged with refusing to supply.
Greenwood told the court yesterday that a male friend had bought his washing around to her house because his washing machine was not working. He had driven home with the washing, but she decided to walk around and hang it up for him.
She claimed she only sat in the driver's seat of the car so that she could reach over to grab the pegs, which were on the floor in the passenger's side.
When the policeman saw her getting out she had not been driving, simply retrieving the pegs, she said.
Judge Callaghan said the constable had given evidence in a "rather normal fashion", while Greenwood's story seemed "very odd indeed".
"It just doesn't make sense to me. I don't believe it. Quite frankly, it's nonsensical."