Natural gas is making its push into transpiration, and it looks like some people are paying attention. Despite higher upfront costs, several major U.S. trucking firms are looking at moving to natural gas trucks for their fleets to take advantage of the deep discount in fuel price. In this video, Fool.com contributors Tyler Crowe and Aimee Duffy discuss the infrastructure currently in place that could support such a switch, and tell investors who could benefit from a move like this in a big way.