I'm guessing, this might have been one of Australia's Vauxhall prototype of their version of a slightly downsized Monte Carlo?
I am thinking it is one of the later model South American Chrysler products based of the mid 1960's dart platform. But it is just a guess.
Now that you mention it, the steering wheel is barely to see and the wipers point right, just like left-hand drive vehicles should have them
A couple of contestants from my favorite deceased brand Even usually conservative Olds got into the game