Io's metallic core makes up approximately 20% of its mass. Depending on the amount of sulfur in the core, the core has a radius between 350 and 650 km (220â400 mi) if it is composed almost entirely of iron, or between 550 and 900 km (340â560 mi) for a core consisting of a mix of iron and sulfur.
In 1886, Karl Benz developed a petrol- or gasoline-powered automobile. This is also considered to be the first production vehicle as Benz made several other identical copies. At the turn of the 20th century electrically powered automobiles appeared but only occupied a niche market until the turn of the 21st century.
In 1807, Francois FranÃ§ois isaac De rivaz designed the first car powered by an internal combustion engine fueled by. Hydrogen in 1886 the first petrol or gasoline powered automobile The Benz-Patent motorwagen was invented By Karl. benzhe early history of the automobile can be divided into a number of eras, based on the prevalent means of propulsion. Later periods were defined by trends in exterior styling, size, and utility preferences. In 1768, the first steam powered automobile capable of human transportation was built by Nicolas-Joseph Cugnot.