Sometimes, what seems like a quaint story can actually be the signal of a significant shift in the way Americans go about their business. In this video, contributor Aimee Duffy talks to Tyler Crowe about how natural gas vehicles are permeating not just the world of big-time manufacturers such as General Motors (NYSE:GM) and Ford (NYSE:F), but also little mom-and-pop operations across America. Ultimately, Aimee argues, it's a small development on the surface, but it's crucial to our energy future.'

Fool contributor Aimee Duffy owns shares of Ford. Fool contributor Tyler Crowe owns shares of Westport Innovations. The Motley Fool recommends Ford, General Motors, and Westport Innovations and owns shares of Ford and Westport Innovations. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.