I think it only takes 4 gallons of oil to make five gallons of alcohol. A little better than the ratio you posted, but still makes you wonder if it would be in gasoline at all if Ohio didn't voter first in the primaries
And yes, it's an excellent fuel in so many ways but is just much less energy dense.
Couldn't the Model-T run on just about anything? Alcohol. kerosene, gasoline, diesel, peanut oil? And I think it gets in the neighborhood of 40-45mpg on many of those fuels. Makes you wonder what we've been doing since then that that mileage is still considered outstanding.
Scott