Ethanol is currently a hot alternative fuel because of one reason: government subsidies on corn. This makes it economically feasible to produce ethanol from corn. The fact of the matter is that making ethanol from corn uses substantially more energy than the ethanol itself will produce, and thus uses up a lot of land inefficiently.
When it comes to making a fuel, we should be looking at renewable resources such as solar and wind power to do it. However, turning food into fuel is not the way to do it. That corn and the land it is grown on would be much better served feeding the hungry and poor.