Experimental Russian Tsar Tank 1914
Russia attempted to completely redefine what a tank was back in 1914 when they attempted to make a “trike style” tank that used two massive 27 feet tall wheels rather than the track style. It had a much smaller third wheel only an estimated 5 ft tall. It was thought that these enormous wheels would go over any obstacles, but due to a gross miscalculation of the weight, the machine was underpowered and got stuck quite often.