[thackney]

Several links for related info at original article.

[Slump Tester]

Once everything gets converted, the maintenance savings would be astronomical.

[DTogo]

With all the recently discovered/recoverable shale gas, it’s about time!!

[TheBattman]

Assuming the cost differential between the two fuels doesn’t decrease dramatically, then even the conversion and maintenance costs would not erase the savings.

In fact, locomotives being powered by CNG makes more sense to me than millions of automobiles.

[VeniVidiVici]

The company burns 1.3 billion gallons of diesel per year.

Yeah, buddy! Imagine what the price of diesel could do with an extra 1.3 billion gallons released back to the marketplace.

[taildragger]

Go to "What's Next?" in this article, last sentence, Natural Gas is mentioned, I am not sure if that is converted to oil or burnt as is for Aero Applications.

http://www.flightjournal.com/blog/2013/02/28/aviation-insider-barnaby-wainfan-on-the-new-face-of-aerodynamics/

[Our man in washington]

Replacing 1.3 billions gallons of diesel fuel with natural gas reduces carbon dioxide emissions by about 5 million tons a year. And that’s just from this one company.

So if an environmentalist asks “What can I personally do to help stop global warming?” say “support fracking!”

[Rio]

“It comes down to the spread relationship between LNG and diesel,”

I don't know what that means. Translation?

[wideminded]

How much of the savings would be neutralized by the explosion of one LNG tender car in the wrong place?