'search what you see' after that it my search got a bit complex, however it's a Protos Panzerauto based on a regular commercial chassis, a Protos 18/42 Typ E1 that was first introduced in 1906. Several were sold to the military in Mexico and used during the revolutionary uprising, so there will be a conection to Pancho Villa. The vehicle in the picture had broken down and was partly dismantled. Photo taken in 1914.
