The good news is that it's getting easier all the time. In the United States, alternative fueling stations are available in all 50 states. Propane and natural gas filling stations tend to be concentrated in larger metropolitan areas, and may be trickier to find in rural areas. However, if natural gas is available where you live, there is equipment available to install a filling station right in your own garage.
Find out where those E85, biodiesel, compressed natural gas or propane and hydrogen filling stations are near you.