I don't think enthusiasts
I don't think enthusiasts have to worry about the Mustang going away. The new Mustang, the Mach E might sell well, or it might be a disaster sales wise. Doesn't mean the traditional 2 door coupe is doomed. If the existing Mustang suffers sales losses as it does currently, that is what will seal its fate. More entry level buyers will purchase the 4 cylinder ECOBoost variant of the Mustang over the V8.