One person posts a right wing think tank analysis with an obvious point of view
Another posts an independent automotive information resource estimate.
Who should you listen to?

Obviously Hybrid purchases have slowed down. We are in the worst
recession since the Great Depression. Car sales have slowed from 16 million to 9 million. The future is bright for hybrids, hybrid plug-ins, clean diesel, and electric cars no matter what those opposed to alternative energy technologies say. Follow the money trail and look at how much money investors are putting into these industries. Imagine where we will be 10 years from now.