Another farmer watches on in bemusement from his tractor.
"He's lost the plot, I think," says the farmer, named only as Scott.
"Stressing out, I don't know. He's obviously had a prang down here.
"He's on something, I think, by the look of it."
Police said they suspected the motorist had been under the influence of drugs and alcohol.
Meanwhile, a passenger in the crashed car claimed not to know anything about the incident.
He said he was asleep - despite evidence the car had done several burnouts before crashing beside the field.
The driver was eventually stopped in its tracks - with the help of police dogs.
"Only in New Zealand," said one commenter on Facebook.
