I think there was a yellow Sunbird looking hatchback with flares wearing snoflakes too.
There is a photo in Norm Darwins "Torana Tough" on page 235 of the car. Someone may be able to put the photo up.
The hatch was shown at the 3/77 Melbourne car show. Leo Pruneau said many journo's walked past the car not realising it formed the basis for the a9x to be released later in the year.