The idea of natural gas vehicles has been kicked around for years in the United States. With the recent surge in domestic natural gas production, though, natural gas cars are becoming an even more possible scenario. The idea is gathering enough steam that the International Energy Agency believes that natural gas vehicles will almost double their market share within the next five years. Granted, a doubling of a 1.4% market share isn't much, but for companies in the business of natural gas transportation, it's a big jump. 

Considering the effort required to build out a fueling infrastructure for natural gas vehicles, a five-year time horizon is pretty short, and not much should be expected during that time. Also, as contributor Tyler Crowe describes in this video, not all vehicles are created equal. Tyler explains how natural gas is pursuing a certain segment of the vehicle industry and talks about what it will take to bring natural gas vehicles to the mainstream.