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.
The first car was invented in the year of 1769 by a French man named Nicolas Joseph Cugnot, who build it under his instructions in the Paris Arsenal by Mechanic Brezin. The ca â¦ r only had 3 wheels and was used to carry heavy artilary during war. The car could go up to about 22 miles per hour and was powered by steam.