• Current news and politics is full of concern about the environment, particularly as it is related to oil use and the auto industry. There are a number of ethical considerations that arise out of these issues. Some propose that these concerns could be alleviated if our use of cars was limited by increased gasoline taxes--if gas is more expensive, we will use less of it and, as a beneficial by-product, improve the environment. Is this ethical? What theories support whether this is ethical or not? Are there injustices built into such measures?