Try to find the spot where the photographer was standing.
This is William Street, King's Cross. The T & G Tower (demolished 1975) in Elizabeth Street, is on the horizon. Google Street View: www.google.com.au/maps/@-33.875097,151.2212843,3a,75y,270...
The large dark coloured sedan nearest the tram is almost certainly a Dodge or plymouth from around 1948...altogether more modern styling than the vertical grilles seen on the other cars.
Great series of shots.