Automobile

An automobile is a wheeled vehicle that carries its own motor. Different types of automobiles include cars, buses, trucks, and vans, with cars being the most popular by far. Earlier terms for automobile include "horseless carriage" and "motor car." An automobile has seats for the driver and, almost without exception, one or more passengers.

Environmental improvements

The automobile was hailed as an environmental improvement over horses when it was first introduced. Before its introduction, in New York City, over 10,000 tons of manure had to be removed from the streets daily.

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Among the first environmental advances are the so-called alternative fuels for the internal combustion engine, which have been around for many years. Early in automotive history, before gasoline was widely available at corner pumps, cars ran on many fuels, including kerosene (paraffin) and coal gas. Alcohol fuels were used in racing cars before and just after World War II. Today, methanol and ethanol are used as petrol extenders in some countries, notably in Australia and the United States. In countries with warmer climates, such as Brazil, alcohol derived from sugar cane is often used as a substitute fuel.

Related Topics:
Alternative fuels - Kerosene - Coal gas - Alcohol fuels - Racing - World War II - Methanol - Ethanol - Australia - United States - Brazil - Sugar cane

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In many countries, plentiful supplies of natural gas have seen methane sold as compressed natural gas (CNG) and propane sold as liquified petroleum gas (LPG) alongside petrol and diesel fuels since the 1970s. While a standard automotive engine will run on these fuels with very low exhaust emissions, there are some performance differences, notably a loss of power due to the lower energy content of the alternative fuels. The need to equip filling stations and vehicles with pressurized vessels to hold these gaseous fuels and more stringent safety inspections, means that they are only economical when used for a long distance, or if there are installation incentives. They are most economical where petrol has high taxes and the alternative fuels do not.

Related Topics:
Natural gas - Methane - Compressed natural gas - Propane - Liquified petroleum gas - 1970s

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