The Volt's biggest problem, I think, was that it came on the wrong side of the chicken-and-the-egg dilemma. Increased demand for electric cars would yield more recharging stations, which would increase demand for electric cars. A similar problem likely occurred in the early days of the automobile--gas stations were not nearly as common in days when the majority of people were still traveling by horseback and stagecoach. Nowadays, it's hard to go across town or even the countryside without running into at least a couple of them.
All that being said, however, to look at this dilemma with a five-year outlook vs. a fifty-year outlook will necessarily yield very different results. Fifty years from now, we are going to have higher seas, we are going to have very expensive gas, we are going to have even more people on this planet than we do now. Green energy isn't just about saving the environment--there is a real, legitimate, long-term economic interest in obtaining them.