Gasoline is the Junk Food of the Fuel Market

Gasoline needs additives* to make it palatable to an engine (which will knock or fail to run without the additives). And many of those additives are carcinogenic. And even with the additives, gasoline burns dirty, creating smoke and grime. Gasoline is potentially cheap, and once other fuels can compete with it, its cheapness will be its only advantage.

Pure methanol or ethanol can be used by an engine without any additives. They are both naturally high in octane and burn clean with high performance.

* Benzene, toluene and xylene are added to gasoline, among other additives.