Is the Prius a silver bullet for fuel economy?

Is there ever such a thing as a silver bullet?

"We like the Prius here at Motor Trend. A lot. You may recall we made the second-generation version our 2004 Car of the Year, probably one of the most radical choices in the entire history of the award. But -- and let me be crystal clear about this -- despite what the likes of DiCaprio, Al Gore, and Vanity Fair would like you to think, the Prius is not the car that will save the planet," writes Angus Mackenzie.

Thus, Angus claims, there is no silver bullet to fuel economy. While I agree....Finish: Angus like the Prius, but it's not silver bullet to fuel economy