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, Fool.com 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.'
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