We have regrettably misplaced the source for this vintage wartime photograph. My best recall is that it is a camouflaged World War I armored truck (almost a hyrid tank of sorts) from Northern Europe, with AI colorization.
A blog for clarifying and continuing the findings that were published in Camoupedia: A Compendium of Research on Art, Architecture and Camouflage, by Roy R. Behrens (Bobolink Books, 2009).