| Vehicles that run on compressed natural gas are | | | | vehicles in the world. Asia is holds the highest number |
| called natural gas vehicles. These modes of transport | | | | of NGVs, accounting to more than half of the |
| are specially designed to utilize either compressed | | | | worldâs quantity. Pakistan records the most |
| natural gas or liquefied natural gas as the automobile | | | | natural gas vehicles, around 2,250,000, which include |
| fuel, instead of the conventional gasoline. In many | | | | cars, busses, trucks and others. The second highest |
| countries, such as the United States of America, | | | | is Iran, having about 1,700,000 natural gas vehicles on |
| compressed natural gas is used to fuel car, vans, | | | | its roads. Taiwan and Vietnam are the smallest users |
| pick-up trucks, transit and school-buses and trucks. | | | | of ngv, with only 4 and 2 of such vehicles |
| Other countries, like Malaysia, consume compressed | | | | respectively. Regionally, the South and Central parts |
| natural gas for taxi-cabs and airport uses. India | | | | of the world come in second after Asia; having a |
| employs CNG mainly for public transport system and | | | | total of almost 4 million NGVs. Africa possesses the |
| this source of energy is even used in auto-rickshaws. | | | | lowest quantity of NGVs, which is less than 300. |
| Thailand also follows suit by exploiting CNG for its | | | | There are about 900,000 natural gas vehicles in |
| tuk-tuks as does Pakistan for its three-wheelers. | | | | Europe and nearly 90,000 in Eurasia, while North |
| Up to 2009, there are nearly 11 million natural gas | | | | America is almost reaching 120,000. |