The Kyoto Protocol mandates that the U.S, reduce emissions of greenhouse ga
ses to 93% of their 1990 levels by the period 2008-2012. This paper explore
s the possibility of reducing carbon dioxide emissions in the transportatio
n sector to 7% below their 1990 level by 2010. This paper examines two poli
cies to achieve these reductions Corporate Average Fuel Efficiency standard
s and gasoline taxes. The introduction of these policies individually makes
the task seem daunting, yet when using the policies jointly the objective
is achievable. (JEL Q38, Q48, R48).