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The world's first self-propelled mechanical vehicle, in other words, the world's first automobile, was built by the largely unknown French inventor Nicolas-Joseph Cugnot.Tasked by the army to develop a steam-powered vehicle for the purpose of hauling cannon, Cugnot devised a scaled-down working model in 1769, and in 1770, he unveiled a full-sized steam-driven vehicle, which he called a fardier a vapeur.Cugnot was one of the first to successfully employ a device for converting the reciprocating motion of a steam piston into a rotary motion by means of a ratchet arrangement, which was used to drive the front wheel.The vehicle was modelled after the fardier, which was a massively built two-wheeled horse-drawn cart for transporting very heavy equipment, such as cannon barrels.Nicholas-Joseph Cugnot was born in Void-Vacon, Lorraine, in 1725 and was trained as a military engineer.

The world’s first self-propelled mechanical vehicle, in other words, the world’s first automobile, was built by the largely unknown French inventor Nicolas-Joseph Cugnot.
Nicholas-Joseph Cugnot was born in Void-Vacon, Lorraine, in 1725 and was trained as a military engineer. Tasked by the army to develop a steam-powered vehicle for the purpose of hauling cannon, Cugnot devised a scaled-down working model in 1769, and in 1770, he unveiled a full-sized steam-driven vehicle, which he called a fardier à vapeur. The vehicle was modelled after the fardier, which was a massively built two-wheeled horse-drawn cart for transporting very heavy equipment, such as cannon barrels. Instead of having a horse at the front, there was a third wheel, which supported a large copper boiler and the driving mechanism. Cugnot was one of the first to successfully employ a device for converting the reciprocating motion of a steam piston into a rotary motion by means of a ratchet arrangement, which was used to drive the front wheel.
The fardier à vapeur could reputedly move at a little over 2 miles per hour, but it needed to be refueled with wood and relit every 15 minutes, for which the fardier had to come to a complete stop. The vehicle was reported to have been very unstable owing to poor weight distribution, a serious disadvantage for a vehicle intended to be able to traverse rough terrain and climb steep hills. In addition, boiler performance was also particularly poor, even by the standards of the day. In 1771, during a trial Cugnot drove one of his vehicles into a stone wall, giving the inventor the distinct honor of being the first person to get into a motor vehicle accident.