"Alternative fuel" means methanol, denatured ethanol, and
other alcohols; mixtures containing 85 percent or more or such
other percentage, but not less than 70 percent, as determined by
the United States secretary of energy, by rule as it existed on
January 1, 1997, [...]
"Alternative fuel" means methanol, denatured ethanol, and
other alcohols; mixtures containing 85 percent or more by volume
of methanol, denatured ethanol, and other alcohols with gasoline
or other fuels; natural gas; liquefied petroleum gas; hydrogen;
coal derived [...]
