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.
The 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 1769 the first steam-powered automobile capable of human transportation was built by Nicolas-Joseph Cugnot.
Actually, Elwood Haynes built the first automobile made in the United States. It was first driven in 1894, two years before the Quadicycle.Duryea's automobile was a horse drawn carriage adapted to use an internal combustion engine but still could be horse drawn. Haynes car was built as an automobile from the ground up.ctually, Elwood Haynes built the first automobile made in the United States. It was first driven in 1894, two years before the Quadicycle.