Mr Fenwick said in setting the crash scenes challenge, officials went all-out to transform new Holden cars to crash-scene wrecks with impacts that could "only be dreamed of in the average motorist's worst nightmare".
First up for Greytown was the Time Critical Rescue with the scene set using a Holden Commodore upside down with a total roof crush and a light pole underneath the car with one person seriously injured.
"The run went well with the patient out and treated by the medics within the 30 minutes allowed," Mr Fenwick said.
Judges' comments were of a top run with a special mention of Greytown's team leader, Kerry Fenwick, who came second beaten only by the eventual overall team leader from Hong Kong.
The technical team of AJ Dawes, Steve Perry and Geoff Allen were in the top three and the medical component finished mid-field leaving the team in sixth place on a countback, Mr Fenwick said.
The Entrapped Rescue was another real scenario, with a Holden Sedan crashed and trapped after a "nose to tail" with a farm tractor and trailer.
The car was wedged up to its windscreen with its damaged steering wheel firmly wedging the trapped person in the front seat.
Team leader Kerry Fenwick called for the winch and the tool men set about winching and cutting the person free in what proved to be the Greytown team's best event.
The medical team, led by Sharon Cretney with Matt Wos as assistant, were placed a creditable second overall in this event.
The team overall came fourth on a countback.
The Controlled Rescue involved a car on its side on top of a power pole with the car roof leaning against a farm trailer and two screaming patients injured and on top of each other, bellowing at rescuers, demanding rescue.
Mr Fenwick said this event proved to be the Greytown team's nemesis.
"With time running out the panic button was pushed when the cutting tool's pump motor, without warning, stopped.
Kerry Fenwick ordered a change to manual tools but time was against them and only one person was freed.
"Major points were lost and the final result reflected on a below-par effort, the team overall coming 13th," Mr Fenwick said.
"Reserve Peter Fisher, although not getting a run, was always in support, giving the team that extra bit of a hand and advice when needed."
Greytown's trauma team, Sharon Cretney and Matt Wos, faced two different scenarios in the Trauma Challenge.
Both involved accessing and treating patients with cuts, breaks and unconsciousness, to be assessed and treated.
They were allotted 15 minutes to treat and prepare the patients for transporting. Leader Sharon Cretney placed her team overall in ninth.
Final results were announced at the gala dinner and prizegiving and it was clear the Kiwi teams had performed well.
To a huge roar of approval, especially from the New Zealand teams, Hawera were named overall winners with Rolleston second.
Three Australian teams were equal third, leaving Hong Kong sixth with Greytown seventh. Kerry Fenwick finished fifth overall team leader.
Next year the Greytown team hopes to travel to Alice Springs, in the Northern Territory, "to improve and prove that they are on top of their art of road crash rescue".
"The team thanks the community for being right behind them with donations of scrap metal and cars, without which the results would not be possible," Mr Fenwick said.
