We could very well be on the precipice of a change in the railroad industry not seen in 60 years. It is becoming very expensive to fuel locomotives with diesel, and liquefied natural gas engines could be a solution. Investors in Westport Innovations (NASDAQ:WPRT) should be excited about this, because it has a jump-start in this market with the recent delivery of four LNG locomotive engines to Canadian National Railway (NYSE:CNI). At $1 million per engine and fueling tender, this is a potential $30 billion market. 

How much of this market is actually attainable? And how much can Westport capture when major industrial manufacturers like General Electric (NYSE:GE) are looking for a foothold in this space as well? Find out some possible answers to these questions by tuning into the video below.

Tyler Crowe owns shares of Westport Innovations. You can follow him at Fool.com under the handle TMFDirtyBird, on Google+, or on Twitter @TylerCroweFool.

The Motley Fool recommends Canadian National Railway and Westport Innovations. The Motley Fool owns shares of Canadian National Railway, General Electric Company, and Westport Innovations. Try any of our Foolish newsletter services free for 30 days. We Fools may not 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.