He gave way to two vehicles but missed a third and drove straight into the path of a large truck.
The driver of the truck managed to avoid McIntyre's car.
McIntyre, an invalid beneficiary, drove away from the crash.
Police found him an hour later, 3km from the scene of the incident.
Court documents said that when McIntyre was stopped, he went to take a swig from the open cask of wine he had in his car.
He told police he'd been rammed by the truck.
Judge Matheson convicted McIntyre on all charges. He was also disqualified from driving for two years and ordered to pay $3200 in reparation.
