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 automobile with an internal combustion engine was invented by Karl Benz in 1885 and patented in 1886. Benz got the patent for this vehicle under the name of his company, Benz & Cie. This three-wheeled automobile sported a four-stroke cycle gasoline engine which was invented by Benz himself.he first steam-powered automobile was invented in 1672, the first electric automobile was introduced in 1830s, while the first automobile with a gasoline engine was invented in 1885. Given below are the details of each of these inventions.