Today we take royal tours for granted, but once upon a time, or at any time before the 20th century, it was impossible for our monarchs to visit their downunder dominions because of the distances involved and the unreliable transport.
The advent of steam power for ships and trains, the evolution of the motor car and, finally, the arrival of passenger air travel shrank their world, and ours, considerably, and the royal tour became a feature of the empire and the Commonwealth.
The first British royal visitor to Aotearoa, New Zealand, was Edward, Prince of Wales, in 1920. During his 28-day tour, he travelled mostly by the royal train, which was both safer and more convenient for royal personages. A variety of best-available cars were used locally. Ideally, these would be Daimlers.