This video gives more info on the Zeta, the car is at the National Motor Museum at Birdwood, North of Adelaide.
The Lightburn Zeta Runabout was based on a British car of the 1950s, the Anzani Astra, but with unique styling.
The blue car in the video is referred to as a "ute" or "utility" which is the Australian term for that body style of a pick-up based on a regular passenger car model. The nearest US cars would be the Chevy El Camino or Ford Ranchero. I think the USA VW Rabbit had a version, too?
That body style was first developed by Ford Australia, the story was that an engineer at Ford Australia received a letter from a farmer's wife, asking Ford to develop " a car that was nice enough to drive to church on Sunday but practical to take pigs to market on Monday." The engineer, Lew Bandt, styled a car that was a regular sedan at the front, two seater, with a cargo area at the rear, but with side bodywork that looked car-like at the sides, not truck-like. He named the style "coupe utility" and the model was a great success, and Aussies shortened to name to Utility and Ute. The style was always popular here until Australian car manufacture ceased in 2017. Holden was the Australian brand of GM, here is a link to a history of Holden utes and the later versions, the Holden Commodore Utes...
https://richardlewis.org/holden-ute
https://richardlewis.org/commodore-ute
Ring ding ding...
