I would think a person with as many useless posts as you have would be able to pipe enough methane from their **** cavity to run almost any car on the road today.

 

Whatever is not gasoline or diesel fuel, I would think would be considered an alternative fuel.

 

Awesome retort! He also blows a lot of hot air, which means perhaps wind power could be an alternate fuel for his car as well.

 

Oh well, Thanks a lot and God bless you.

 

Propane, while still a fossil fuel, is super common in fleet vehicles. It doesn't burn as clean as natural gas, but the pressure required for storage is almost ten times less, and will allow more than twice the trip length for the same storage volume.

It is a more mature technology, but still requires the obvious safety concerns. The most obvious one is that for normal passenger cars without external tanks, the trunk tanks, for example, are specific. You cannot use forklift style inside a trunk.

The conversion is cheaper than electric and still allows the driver to switch over to gasoline. This option is great for larger, carburetor engines, especially trucks that allow space for the universal forklift tanks. I'm not versed on fuel injected model conversions, but I imagine it's out there.

Keep in mind that LPG will burn hot, unlike alcohol, so cooling is still important.

Availability is much greater than alcohol or natural gas. Almost any U-Haul center will be glad to service your propane needs as added income for them. There are more stations than electric, CNG, or E-85 in the US.

The cost varies, depending where you are. From where I'm at in SoCalifornia, it's about in between CNG and alcohol. LPG is made in the US and doesn't affect too much the environment compared to the rest of the refining industry (Still yuck.) Better for the environment than gasoline or diesel, for sure, not only for the exhaust, but for particulate matter, as well. In fact, you won't need to change your oil as often, either, and your catalytic will last longer!

Sorry for the long message; 'been thinking the same.