"It was a surreal situation, we were on a really busy road but I don't remember hearing a thing other than what I was doing," he said.
"I remember how blue he went and how fast as well and I kept saying to him, 'You're not going anywhere, Dad, I'm not letting you'."
A nurse passing in her car soon stopped to help, followed by a passing ambulance crew heading back to their base from another callout.
"[Dad] had to be shocked twice with a defibrillator but that brought him around. When they said, 'We got a pulse,' I just broke down," Andy said.
"All the emotions that I had held back just came crashing down."
Wayne underwent heart surgery and is recovering in the Gold Coast University Hospital. He taught First Aid and CPR in the Bay of Plenty before he and his wife moved to Australia just over a year ago.
Speaking to the Rotorua Daily Post from his hospital bed, he said he was "very proud and extremely grateful" for his son's cool head and quick actions.
"When his children were born I decided to go through infancy CPR with him and during that process talked about what to do for adults. Lo and behold the skills he learnt saved my life," Mr George.
"The man is a lifesaver and an absolute legend. This also proves the value of learning CPR and everyone should be trained."
Both men said the help they received from the medical staff was outstanding and have vowed never to say a bad thing about Australians again.
"I've told Dad to hold his excitement when the Kiwi Sevens team win their next title," Andy said.