The crash, two weeks into a month-long ''holiday of a lifetime'', left him with a broken elbow, foot and ribs and a collapsed lung and his wife, Rosie, 54, with a fractured eye, perforated bowel and a badly fractured wrist.
''It took just under an hour to free us from the car and then they air ambulanced me here and they took my wife by air ambulance to Southland Hospital.
''I remember sitting in the car looking at my wife, blood coming down her face and my face and going into unconsciousness.
''They tell me that they were resuscitating me on the way here.''
Since arriving at Dunedin Hospital, he had been deeply touched by the death of 5-year-old Ruby Jay Marris, who was killed in a car crash near Moeraki, also on Saturday, which resulted in a 32-year-old Beijing resident being charged.
Mr Whitmell had spoken to members of the Marris family who were recovering from their injuries in Dunedin Hospital.
''The family down below have been to see me and we cried a lot,'' he said.
He believed harsher fines and prison sentences for people whose poor driving caused death or serious injury and more guidance from rental companies were needed to prevent further deaths.
It was an over-simplification to simply blame foreign drivers who did not know New Zealand's road rules, and rental car companies bore some of the responsibility.
''[Foreign drivers are] getting cars without proper instructions, without being told the rules of the road, and they are driving and killing your citizens, including a 5-year-old girl.''
When he hired his rental car from Auckland, he was given no guidance about his car, or New Zealand's roads, from the over-worked and rushed staff member behind the counter.
''They just give you the key and they let you on the road with three tonnes of metal, going at 70 miles [113km] an hour.''
He believed the rental companies should have a check list where they ran through New Zealand's road rules with all foreign drivers.
''The rental companies have a duty to tell them the rules of your road and not let them have the keys until they feel that they understand them.''
Harsher fines should be used to help pay for the cost to New Zealand's healthcare system caused by crashes involving foreign drivers.
