What is Natural gas vehicle?
A [[natural gas]] [[vehicle]] or NGV is an [[alternative fuel vehicle]] that uses (compressed or liquefied) natural gas instead of other [[fossil fuel]]s. == Natural gas == [[Natural gas]] is a mixture. It consists mainly of [[hydrocarbon]]s. The main component is [[methane]]. Natural gas is often found in the ground together with [[petroleum]]. ===Storage and Transport=== The main difficulty in the use of natural gas is [[transportation]]. Natural gas [[pipeline]]s are economical, but are impractical across [[ocean]]s. Liquefied natural gas tankers are also used. Compressed natural gas (CNG) is stored in [[container]]s at high pressure. Liquefied natural gas (LNG) is stored at temperatures as low as - 260&nbsp;°F (- 162&nbsp;°C). At these temperature conditions, natural gas is in a liquid state. == Natural gas vehicle and technology == ===History=== Étienne Lenoir built 1862 the first gas [[engine]], before there have been fuel and diesel engines. Over the years gas was used in many different machines, so the technology improved also. From the 1950s the automobile industry focused more on fuel technology than on gas technology. There have only been single cars with natural gas technology and few gas stations which offered natural gas. Because of [[climate]] and [[environment]] the role of natural gas became more and more important. ===Current development=== Worldwide existing about 5.7 million natural gas vehicles.([[Argentina]], [[Brasilia]] and [[Pakistan]] together count 4.2 million!) ''[[Europe]]'' The French automobile producer Citroen is cooperating with a French gas supplier and wants to offer a compressor which is connected to the private gas connection at home, so that everyone can refuel his car at home.The price for the compressor will be about 500 €. There will be also a tax reduction for people who have bought a new NGV. And the business group carrefour wants to install natural gas stations.(Region Toulouse) In [[London]] and surroundings, NGVs are free from paying the city toll. Owners