[driftdiver]

So its just over half of what diesel provides and slight better for gasoline.

I guess if the cost is less its an option.

[sgtyork]

NG is roughly 30 percent cheaper than diesel in equivalent energy.

[nascarnation]

You can find CNG stations in your area by using this:

http://www.altfuelprices.com/

Prices vary widely. Here in Indianapolis they appear to range from 99 cents to 2.15 per gasoline gallon equivalent.

I suspect if a company like a rubbish hauler or FedEx installs their own fuel depot, the price is even lower.