This paper estimates the costs of a government mandate to use natural gas vehicles, focusing on the less desirable attributes that these vehicles 9 possess. A model of producer and consumer behavior in a market for a differentiated product is constructed; a hedonic price function is estimated; and consumer surplus losses from the substitution of natural gas cars for gasoline cars are calculated. These losses are found to be significant: the average per car consumer surplus loss ranges from $1100 to $3200, with 20% to nearly 50% of the loss due to changes in vehicle characteristics. The costs of such a policy appear to be greater than the environmental benefits but may not be too far out of line with the costs of alternative approaches for reducing vehicular pollution.

This paper discusses the nature, and magnitude, of externalities associated with automobile use, including local and global pollution, oil dependence, traffic congestion and traffic accidents. It then discusses current federal policies affecting these externalities, including fuel taxes, fuel economy and emissions standards, and alternative fuel policies, summarizing, insofar as possible, the welfare effects of those policies. Finally, we discuss emerging pricing policies, including congestion tolls, and insurance reform, and summarize the appropriate combination of policies to address automobile externalities.

Can Downstream Waste Disposal Policies Encourage Upstream "Design for Environment"? by Paul Calcott and Margaret Walls. Published in volume 90, issue 2, pages 233-237 of American Economic Review, May 2000