Scott James Addison (22), a freezing worker, died from injuries he received when he crashed his Subaru Legacy into a tree on December 28, 2012. Mr Addison was the only occupant.
He had been at a function at Tokarahi that evening, consumed bottles of bourbon pre-mixes and, heavily intoxicated, argued with family.
He was asked to leave, got into his car and drove off at speed.
After travelling along a short straight on the Tokarahi-Ngapara Rd, Mr Addison lost control of the car as it entered a bend which, police calculated, could normally be negotiated up to 105kmh.
The car slid across the road, the right corner hit a concrete post and wire fence, then hit a large tree about 5m from the edge of the road.
Crash analysis estimated the speed when Mr Addison lost control at 140kmh to 146kmh. Crush calculations on the damage to the car indicated an impact speed of 110kmh.
The speedometer was stuck at 115kmh.
Analysis showed he was intoxicated, at 2.6 times over the 80mg legal limit.
He was found to have 210mg of alcohol per 100ml of blood and 296mg per 100ml of urine. The higher urine level indicated a previously higher blood-alcohol level.
Mr Addison had a learner's licence and was not entitled to drive without another person in the car who had held a full driver's licence for at least two years. He was also not wearing a seat belt.
Mr Crerar said there were no faults with the vehicle or road which contributed to the crash.
''Probably because he was drunk and/or angry, Scott Addison has driven at a speed significantly in excess of that which was safe, has lost control and as a result left his two children without a father,'' he said.
Although it was unclear whether a seat belt would have, in the circumstances, protected Mr Addison from serious injury, it was always appropriate for the driver of a vehicle to wear one.
''In my experience, drivers who are intoxicated and ... place themselves at greater risk, are the drivers least likely to protect themselves by seat belt use,'' Mr Crerar said.
The inquest found Mr Addison died from avulsion of the brain stem from the spinal cord, due to severe blunt force head injury with skull fractures.
