[Logical me]

How about converting your 15 MPG Hummer or truck to run on CNG vs Gasoline? Assuming a proper installation of the conversion kit, there will be no gain or loss in MPG. The cost will likely decrease as the fuel is much less expensive that $4/gallon gas.

Does every station in the US carry CNG?

[taxcontrol]

No but you can purchase a home unit to fill your tank from your household NG line. It’ called MyPhill (www.myphill.com)