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In page Bertha Benz:

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With cutting-edge bicycle constructions, the Model I Patent-Motorwagen was the original Patent Motor Car and the world's first automobile.[4][5] The Model II was converted to a four-wheeler for test purposes, making it the only one of this model.[citation needed] On 3 July 1886, Karl Benz presented the Patent-Motorwagen automobile to the public in Mannheim. It had powered rear wheels with a ringed steel and solid rubber, steerable front wheel and optional seat arrangements and a folding top.[6] Karl Benz was a poor marketer and faced competition by Gottlieb Daimler, which prompted his wife to undertake the test drive in 1888.[1]