Reaching an Understanding

Early in this process, I began to understand how difficult it is for most people to own a CNG fueled vehicle and have it make sense.  At this time there is exactly one factory made CNG vehicle in the US, The Honda Civic GX (which I will go into greater detail at a later date).  Others are soon to come, but today that is the option.  That leaves us with purchasing one which has been converted, or converting one of our own.  There is a general understanding that the conversion costs around $10,000.  There is a federal tax credit which covers 50% of the costs of a NEW conversion.  If we do a little quick math on my individual situation, it would take around 3 years to recoup my expenses and begin to save money.  Possible for the adventurer?  Surely, but it isn't that simple.