Peter Orszag, vice chairman of global banking at Citigroup and an adjunct senior fellow at the Council on Foreign Relations, and President Obama's former director of the Office of Management and Budget wrote an article in Bloomberg about using natural gas as fuel for cars and brought Armenia’s example.

“Armenia is not generally known as a world leader, but it holds at least one record: Seventy-five percent of its cars and trucks run on natural gas,” he had said. “In the United States, on contrary, the share is well under 0.1 percent – even though natural gas prices have plummeted there over the past few years. Given the problems associated with U.S. dependence on oil, more use of natural gas for transportation could carry big benefits.”

According to Orzag, one of the most important advantages of this would be a macroeconomic one.

“Switching to natural gas vehicles would reduce our vulnerability to oil price shocks. That benefit alone could amount to between $850 (for sedans) and $18,500 (for heavy-duty trucks) for each vehicle converted,” the author of the article writes.

According to him, more natural gas cars and trucks could also, if managed well, reduce greenhouse gas emissions and other pollutants.

“The bottom line is that the U.S. would be much better off with a wider choice of transportation fuels,” Peter Orszag states.