Karl Benz
Daimler had developed the first liquid petroleum vehicle in 1885 and Karl Benz had developed the first purpose built automobile using a 2 cycle engine of his own design a few months later. Daimler never met Karl Benz during the period of invention. In 1896 Daimler (DMG) sued Benz &amp; Cie for violating his 1883 patent on hot tube ignition. Daimler won and Benz had to pay royalties to DMG. Daimler did not meet Karl Benz while they were in court in Mannheim. Later at the founding of the Central European Motor Car Association Daimler and Benz still did not speak to each other.