The location for this marvelous period picture is unkown but possibly in New Zealand with the photo taken circa 1915
The vehicles appear to be:
Front row L to R; 1915 Buick C4 Truck (note LHD), 1915 Buick C34 Roadster, 1915 Buick C35 Touring, 1915 Cadillac Touring
Second row; 1915 Briscoe Touring (both vehicles)
Others; 1915 Briscoe Roadster (rear end view), others unidentified (note: large roadster also LHD