Tampa Bay Times: Imagine driving a normal car that gets more than 50 miles per gallon. That will be routine in a decade, not because of the free market but because of progressive public policy. The free market solves many problems, linking willing buyers and sellers to get a fair price for both. But government has an important role in regulating some rules of that market, particularly when safety, the environment and long-term goals are concerned. Years ago, the Environmental Protection Agency set new Corporate...