4 wheel drive dowes *not** equal 4 wheel STOP.
And I thought all cars had breaks on all wheels... (4 wheel stop). Was I wrong? Maybe I should check my car again.
You are literally demanding perfection. Exactly how many professions are there where people don't make mistakes?
Well... programmers seems to be among the worst...
From the wiki on Fuel: "Fuels are any materials that store potential energy in forms that can be practicably released and used as heat energy. The concept originally applied solely to those materials storing energy in the form of chemical energy that could be released through combustion, but the concept has since been also applied to other sources of heat energy such as nuclear energy (via nuclear fission or nuclear fusion), as well as releases of chemical energy released through non-combustion oxidation (such as in cellular biology or in fuel cells)."
Given that the article is about methane, fuel clearly refers to a material that can be oxidized to release energy. Without an oxidizer, the presence of methane would be useless for this use.