Taylor's Law

"According to some, plug-in hybrid vehicles are supposed to be the wave of the future. Of course, if they really were the wave of the future, there would be no need for ranting in Washington - automobile manufacturers would be busy making them as we speak. It’s only when corporate America is cool to an idea that the prophets turn to the taxpayer or the regulator. This illustrates Taylor’s law - the commercial merit of any particular technology is inversely related to the degree of political tub-thumping heard in Washington for said technology.”

I think I would agree with Taylor's Law faster than you can ethanol. Read more here.