Well I've taken some huge steps forward on my quest today; and the strange connections with me and the car just keep coming....
I happened to be in the area for work and dropped by the Sunbury Visitor's Information Centre. The ladies there were very helpful and after some initial curious looks as I told them my story, their wheels started turning. I mentioned I believed Fangio was involved in the 6.9 press release at Emu Bottom. They advised me that the Emu Bottom Homestead was no longer open to the public as a historical site and that it was currently for sale with 1 day left for applications to be submitted. Apparently the current owners bought the property in 1968 (the year I was born), so they've had it for 50 years. They then pulled out a week old copy of the Sunbury Leader and showed me an article on the property and the owners. In the article it actually mentions a visit by Fangio! That's when the ladies became even more interested. I managed to get some contact details for a couple of historical societies that hold records for the area, thanked them both for their help and left.
Made a couple of phone calls including Emu Bottom Homestead bookings (handled by an external organization) and obtained email addresses to forward the photo in an attempt to locate the photo location. I even got the meeting details of the historians running the Sunbury Museum which is currently undergoing renovations. So then I head for an afternoon coffee break. Down to an old favorite for a Mocha at Jolly Miller and from a distance I stare at the pictures on the wall (which I've seen many times before). And then in the corner of one of the pictures I notice an unusual and familiar window...
I call the ladies at the Visitor's Centre and tell them that I think I have my answer already. They're very happy I gave them the update.
Then I call MBA/Pacific to see if they have any records of the press release day. When I got home I checked the ad for Emu Bottom and found an area on the property that showed promise, but lacked the horse trough in the background (well it has been 40 years and things do change)!
Next lines of enquiry will be the MBCV and The Financial Review, followed by Fangios relatives (seriously)!
Hopefully when I'm done I'll be able to put it all together as a photographic record of the one day in history when the 6.9 reached our shores and was driven by a F1 legend.