In the book the Russian Military air fleet in WW I Volume 2 it lists on 30.11.14 a Russian armored car "Spa" downing an aircraft of FFA 37 crewed by LtndR H Dahn POW and Obltn H. Deunert KIA NE of Lodz.
youtube.com WWI the Eastern Front Winter 1915 has film clips of Russian armored cars. Also in Der Krieg Der Bilden has a picture of a knocked out Russian armored car (note some of the pictures in this clip are graphic).
In the online books "Austria-Hungary's Last War 1914-1918 there are several references to Russian armored cars in volumes 4 ,5, 6, and in volume 7 it mentions Italian armored cars in the Piave and Vittorio Vento battles. It also has references to Austrian armored cars page 101 mentions a armored car platoon and on page 809 it mentions armored cars sent to help the coastal sector fell into the hands of the Yugoslavs on 2 Nov 1918.
