Try to find the spot where the photographer was standing.
The chap sitting beside the driver might be SA Governor Sir Henry Galway...seen in this SLSA pic - collections.slsa.sa.gov.au/resource/PRG+280/1/14/1
I'm fairly certain the chap sitting in the back on the left (viewer's right) is Victorian Governor Sir Arthur Stanley - www.npg.org.uk/collections/search/portrait/mw52597/
The chap sitting in the back on the right (viewer's left) might be NSW Governor Sir Gerald Strickland...he wore specs...
Read All About It ! -
Is the car a Renault ? From the shape of the bonnet ...
Indeed it is a Renault: 1914 12CV EF Torpedo Chassis
[https://www.flickr.com/photos/[email protected]] Great! I wonder if this one was also buttercup yellow ?