CNG is great.
Cheaper.
Almost the same range as octane.
Can fill up at home. Wake up every morning with a full tank.
Fewer engine problems.
Problems:
Except New York state, CNG stations are rare.
If you run out of CNG, you have to have your car towed
I think they are more common in Oklahoma or California, compared to NY.
It isn't a great choice for all location. But it is in some locations, for some people.
The opened up a station very close to me, Southwest Houston. We drive by it a couple times a week. I'm going to look hard at a dual-fuel set-up for the next truck.
Pennsylvania, West Virginia and Ohio (Marcellus/Utica Shale Play) are installing CNG fueling stations rapidly...without gov't money.
The oil & gas industry is converting to CNG trucks and is helping to drive the demand for the product they extract.
It is a wonderful example of capitalism and free markets at work.