The Burstyn tank was a paper proposal by an Austrian Army officer Gunther Burstyn, afer he saw tracked agricultural tractors. The Austro-Hungarian authorities showed no interest when it was proposed to them in 1911. Burstyn eventually patented his design but did not progress beyond a paper project. HGM (Heeresgesschichtliches Museum) in Vienna constructed a full sized model of the Burstyn tank in 2011. The folding "arms" on the tank were designed to help with trench crossing. The front pair were capable of swivelling to help with steering.