Electricity can come from whatever source you need. You're not tied to a specific fuel with batteries like you are with an ICE or would be with the alcohol/gene

Electricity can come from whatever source you need. You're not tied to a specific fuel with batteries like you are with an ICE or would be with the alcohol/generator system you proposed. You can charge a Tesla off of an alcohol generator and have it drive the same as if you charged it with a diesel or petrol generator. The same can't be said about alcohol- or petrol-powered vehicles. Global catastrophe blocks out the sun? Fine, charge off nuclear. Nuclear generators destroyed by war or terrorism? Just use wind. The flexibility is what makes electric cars superior, and being able to store energy is what makes intermittent renewables like solar and wind viable when it's not sunny or windy outside. Most importantly, in a perfect world you'd only have to make the battery once. Some means of recycling dendrite-ridden lithium back into usable material would go an exceptionally long way as well. We gotta store excess power somewhere, though.