On the subject of supply constrained taxi permits, here's an interesting NPR story on NYC's taxi medallions: http://www.npr.org/blogs/money/2011/11/29/14286678

On the subject of supply constrained taxi permits, here's an interesting NPR story on NYC's taxi medallions: http://www.npr.org/blogs/money/2011/11/29/142866785/the-tuesday-podcast-why-does-a-taxi-medallion-cost-1-million http://www.npr.org/blogs/money/2011/11/29/142866785/the-tues...