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Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to seven people, typically have four wheels and be constructed principally for the transport of people rather than goods. However, the term is far from precise. As of 2002 there were 590 million passenger cars worldwide (roughly one car for every eleven people), of which 140 million in the U.S. (roughly one car for every two people). . HistoryAn automobile powered by the Otto gasoline engine was invented in Germany by Karl Benz in 1885. Benz was granted a patent dated 29 January 1886 in Mannheim for that automobile. Even though Benz is credited with the invention of the modern automobile, several other German engineers worked on building automobiles at the same time. In 1886, Gottlieb Daimler and Wilhelm Maybach in Stuttgart patented the first motor bike, built and tested in 1885, and in 1886 they built a converted horse-drawn stagecoach. In 1870, German-Austrian inventor Siegfried Marcus assembled a motorized handcart, though Marcus' vehicle did not go beyond the experimental stage.
Internal combustion engine powered vehiclesIn 1806 François Isaac de Rivaz, a Swiss, designed the first internal combustion engine (sometimes abbreviated "ICE" today). He subsequently used it to develop the world's first vehicle to run on such an engine that used a mixture of hydrogen and oxygen to generate energy. The design was not very successful, as was the case with the British inventor, Samuel Brown, and the American inventor, Samuel Morey, who produced vehicles powered by clumsy internal combustion engines about 1826. Etienne Lenoir produced the first successful stationary internal combustion engine in 1860, and within a few years, about four hundred were in operation in Paris. About 1863, Lenoir installed his engine in a vehicle. It seems to have been powered by city lighting-gas in bottles, and was said by Lenoir to have "travelled more slowly than a man could walk, with breakdowns being frequent." Lenoir, in his patent of 1860, included the provision of a carburettor, so liquid fuel could be substituted for gas, particularly for mobile purposes in vehicles. Lenoir is said to have tested liquid fuel, such as alcohol, in his stationary engines; but it does not appear that he used them in his own vehicle. If he did, he most certainly did not use gasoline, as this was not well-known and was considered a waste product. The next innovation occurred in the late 1860s, with Siegfried Marcus, a German working in Vienna, Austria. He developed the idea of using gasoline as a fuel in a two-stroke internal combustion engine. In 1870, using a simple handcart, he built a crude vehicle with no seats, steering, or brakes, but it was remarkable for one reason: it was the world's first vehicle using an internal combustion engine fueled by gasoline. It was tested in Vienna in September of 1870 and put aside. In 1888 or 1889, he built a second automobile, this one with seats, brakes, and steering, and included a four-stroke engine of his own design. That design may have been tested in 1890. Although he held patents for many inventions, he never applied for patents for either design in this category.
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