That would be great of course, but the technology is still only in its infancy and if we ran out of petrol today people would follow the path of least resistance and turn to something true & tested which would be ethanol.
IMO they should drop the whole ethanol idea today, steer everyone over on green diesel cars that are much more energy efficient than gasoline cars, and then gradually move over from diesel via diesel hybrids to electric cars. If everyone went diesel today we'd get a few decades more out of the oil, leaving ample room for the development of alternatives.
Diesel is so much better than ethanol.
Ethanol is nasty crap. If the government approves the 15% volume content anyone iwth a gas powered boat or watercraft is in trouble.
Ethanol does to engines what this thread does to its readers.
It appears to fuel the engine or information but in the end it is full of sludge that slowly destroys the engine and before you know it your mind is a goo.