It's becoming increasing clear that ethanol is an all-around Bad Idea. Earth First! (We can strip mine the rest later.)
But aside from ethanol, are the various ways of making biodiesel, making fuel from solid waste, coal gasification, etc. One of the largest arguments against gas alternatives in the past has been the cost of production. When the cost for equivalancy is ranges from eighty to a hundred dollars per barrel, there's going to be very limited research and development until the outlook is that crude will be at $70 per barrel or higher for the foreseeable future.