Despite their injuries, they drove themselves in the damaged truck to Wairoa Hospital.
They were flown to Hawke's Bay Hospital and later transferred to Hutt Hospital.
When they loaded up the car to go camping, it is a fair bet they never imagined finishing their trip in hospital.
They have learnt the lesson of keeping gas cylinders away from flames, sparks and heat the hard way.
It may not seem so now but it could have been worse if they had passed out from the fumes in the enclosed cab.
Fortunately, they are now all in a stable condition.
With summer upon us, it's a good time to check your gas bottle or cylinder.
Take a look. How old is it? Is it looking a little worse for wear?
Fires are often caused by equipment leaking or breaking.
Cracked or damaged hoses should be replaced. It pays to check connections are clean and fittings snug - and always use the correct hose.
A minute or two checking this out could prevent any mishap.