http://www.silhouet.com/motorsport/tracks/ausnzhc.html

Austins Road Used from 1962-1965.

I claim no personnel knowledge and can only go on the info I/we find. The windscreen for the car was gone so unfortunately no Wof sticker to indicate when last rego'd. I'm actually glad it's not the Billington car as that would in some ways affect what I can/would do with the car.
The video might not even be Austins Rd, that is what the title says but it may be as inaccurate as the year on the header.
At the moment it is an intriguing discussion trying to figure out what it is. . Thanks for your interest and support.