This is one example where one MUST not simply rely on superficial information or sound bites, but learn a bit deeper into it. The push for ethanol as an alternative energy use sounds fine and dandy on the surface, but after one looks at it more, it isn't as attractive as it is made up to be. This article argue that it actually costs more, in terms of energy and also in terms of other issues, to use ethanol within our current system.
Similar arguments appear to hold true for the use of hydrogen. This is where the lack of knowledge not only leads to ignorance, but also leads to being deceived into accepting something that may actually be worse than the problem that we are trying to solve.