It's possible that Alcohol could be used as an alternative fuel. Basically, it would have to operate about the same way that Hydrogen would. That is, the fuel is not the source of energy, it is simply a medium for storing the energy. Some means, such as solar-thermal, or wind, or tidal, or geothermal, (or anything else) is used to provide energy someplace out of the way (like a vast desert), and energy is used to make the fuel (such as Hydrogen). The fuel is then distributed and used more or less conventionally. I assume (but don't know for sure that) methanol has a higher energy density than compressed Hydrogen.
Forming opinions as we speak