I DON'T KNOW WHAT ARNOLD KLING IS TALKING ABOUT The market isn't telling consumers to drive less. The "market" isn't "telling" the consumer anything. Further, why are Washington, D.C. "libertarians" and "free market" econ profs always crying about the state of economic education in politics? Do they not understand the nature of the state? That it is an organization based on exploitation, not cooperation?
Why should a politician ever care about understanding economic science (except insofar as it enables more manipulation, as is the role played by modern economic science just nicely as it is)?