Wow!
too cool! I watched "Ladies in black" on Amazon Prime last week. It is set in Sydney in 1959. It showcased many mid century Aussie-American products. Am I wrong in presuming that your middle class was more in tune with Canada the USA then also because while your nation fought in WW2 alongside us, and the UK, but only they had war on their own soil, and took longer to rebuild and recover form it?
With a second building next to it of Holdens, Leylands, Chryslers, and Fords, you'd have a huge tourist attraction......