If you look closely, you’ll find that Manzi has gone and made the case for a carbon price in as compelling a fashion as you’re likely to find. Manzi thinks about automobiles and gas taxes and pictures a certain kind of innovation new cars with new engines that don’t run on gas. And when he looks at Europe he doesn’t see it. But does that mean that there has been no innovation in response to the higher gas tax rates?Clearly that’s not the case. In general, Europeans do drive different automobiles, which tend to be smaller and more efficient.