Dedicated websites, such as CNGAutoSales.com, list available compressed natural gas vehicles, and eBay offers a number of green vehicles for sale as well. Local classified sections might also list CNG vehicles on occasion, but the rarity of these cars might make them difficult to find.
One of the main benefits of CNG vehicles in the United States is the amount of natural gas available domestically in addition to the stability of the natural gas market. However, natural gas is difficult to transport, and natural gas stations can be hard to find in many regions. People willing to pay extra for CNG vehicles may want to consider importing one. In Pakistan and other countries, CNG vehicles are far more popular than in the United States.