“Americans have cut back on buying vehicles of all types as the economy continues its slide. But the slowdown has been particularly brutal for hybrids, which use electricity and gasoline as power sources. They were the industry’s darling just last summer, but sales have collapsed as consumers refuse to pay a premium for a fuel-efficient vehicle now that the average price of a gallon of gasoline nationally has slipped below $2.”

There have been more sales of diesel vehicles than hybrids in past years; and that would be noteworthy.

Would be more valuable to look at how the economic conditions are affecting the purchase decisions for all green cars — not just hybrids but diesels as well.