This news was released by the Alliance this week, to honor what it has declared to be "National Alternative Fuel Autos Week." From the 12th to the 16th, the Alliance is celebrating the first such week by noting 2006's banner year for alternative fuel auto sales (1.5 million).
Yes, the Alliance is strictly a PR organization. Yes, it's questionable that they claim E85 vehicles are "alternative fuel" vehicles when you can fill them up with dinojuice every time (but, this is the consumer's decision, not the manufacturers). And yes, the more choices we have, the better.
[Source: Alliance of Automobile Manufacturers]