Natural gas is abundant, clean and far cheaper than diesel. That has the U.S. transportation and auto industries looking for ways to kick their dependence on dirtier fossil fuels.
After years of debating how to tap domestic energy sources, new innovations in the sector have created a boom in U.S. energy production. And natural gas is now being viewed as something of a panacea for much of what ails the world's largest economy — cheaper energy could make U.S. manufacturing globally competitive again.
Indeed, natural gas was the buzz of CERAWeek, an energy conference in Houston that explores hot topics in the energy sector.
Using the fuel in conventional transportation is one avenue that appears to hold vast potential.