Doesn't most mogas STC's cover only alcohol-free gas, which AFAIK is increasingly hard to acquire in many places? It seems that longer term, in many places of

Doesn't most mogas STC's cover only alcohol-free gas, which AFAIK is increasingly hard to acquire in many places? It seems that longer term, in many places of the world, particularly outside the US, the answer is diesel aero engines, which can run on jet fuel.