I too well remember that museum. And the hospitality shown us by staff in letting us wander through.
Good southern Kiwi attitude.
And the trucks! Crikey I was impressed!
But it brought home to me how bloody old I'm getting. The old Internationals, Bedfords, Austins, Commers, Fords...
And here they are in a museum. There would have been twenty or more of those trucks that I would have driven at some stage in my working life.
The Austin K series was the worst. If you couldn't double de-clutch or reverse by mirror you couldn't drive those beasts. Mission Impossible.

Perhaps I should be there in the museum too?