[Yo-Yo]

The article isn’t clear, so are these dual fuel trucks or CNG only?

For consumer use, dual fuel trucks would probably sell much better than CNG only trucks. CNG only are most appropriate for fleet use, as they require a special filling station be installed. For home use, you can put one in at home, but would like the ability to switch to gasoline when on the road.

I’ve see dual gasoline/propane conversions, but I’m not sure if it’s even possible for a gasoline/CNG conversion.

[thackney]

The article isn’t clear, so are these dual fuel trucks or CNG only?

From the article:

Last year, Ford announced that its 2014 F-150 trucks would come in two options beyond the typical gasoline model: one that runs on natural gas and another that can run on natural gas or gasoline.

So Gasoline, CNG, or both.