Time for Automotive Emissions Labels?

As a companion the newly-announced plan for CAFE standards, the EPA is likely to use its authority under the Clean Air Act to regulate CO2 emissions from autos on a gram-per-mile basis.

With these new developments the time might be right for the government to provide car buyers with gram-per-mile information they can incorporate into their purchase decisions. RFF Senior Fellow Kate Probst has proposed a labeling scheme along those lines here.