1. The internal combustion engine was invented by Karl Benz around the 1880s.
2. Karl Benz built the first single-cylinder gas engine on December 31, 1879 (the speed is 200 rpm, the power is about 0.7 kilowatts). But this engine did not change Mercedes-Benz's economic predicament, and the threat of bankruptcy still exists.
3. This German who refused to admit defeat was not defeated by poverty. After years of hard work, Benz finally successfully developed a single-cylinder gasoline engine on January 29, 1886 (unlike his opponents, Benz installed the engine on a three-wheeled frame).
4. Invented the first horseless tricycle (now preserved in the Automobile Museum in Munich). Mercedes-Benz Car Company obtained the patent for automobile manufacturing. It was this day that was recognized as the birthday of the automobile.