Ford (NYSE: F) is continuing its partnership with Westport Innovations (NASDAQ: WPRT) in expanding its offering of its Super Duty line to more trucks featuring Westport's WiNG System, which uses compressed natural gas (CNG) first, then gasoline once empty. The offering will be primarily for fleet vehicles rather than individuals, but the system has received critical acclaim and shows that the auto industry trend's more toward CNG is continuing. In this video, Motley Fool industrials analyst Blake Bos gives us more examples of this trend and tells investors what to watch, and how they can be a part of it.

Blake Bos has no positions in the stocks mentioned above. The Motley Fool owns shares of Clean Energy Fuels, Cummins, Ford, General Electric, and Westport Innovations. Motley Fool newsletter services recommend Clean Energy Fuels, Cummins, 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.