What does it take to be able to own and operate a taxi and earn $30,000, $40,000 or more a year? You need to purchase a used car and liability insurance. Compared with other businesses, the startup cost to become a taxi owner/operator is modest; that's until you have to come up with money for a license. In May 2010, the price of a license, called a medallion, to own one taxi in New York City sold for $603,000. As referenced in my recent book, Race and Economics, New York City is not alone. In Chicago, a taxi license costs $56,000, Boston $285,000, and Philadelphia $75,000. It's not rocket science to understand the effect of laws that produce these prices: They discriminate against anyone getting into the taxi business who lacks tens and hundreds of thousands of dollars or bank credit to be able to get a loan.