Thursday 3 October 2013 at 18:14
Four photographs depicting dramatic scenes from an "auto polo" match, a version of polo played using cars rather than horses. The sport - thought to have been invented as a publicity stunt by a Ford automobile dealer from Topeka to sell Model Ts - was popular at fairs, exhibitions and sports venues across the United States and several areas in Europe from 1911 until the late 1920s.
Source: http://publicdomainreview.org/2013/10/03/auto-polo-ca-1911/