An anonymous reader writes: The U.S. Postal Service may face insolvency by 2011 (it lost $8.5 billion last year). An op-ed piece in today's New York Times proposes an interesting business idea for the Postal Service: use postal trucks as a giant fleet of mobile sensor platforms. (Think Google Streetview on steroids.) The trucks could be outfitted with a variety of sensors (security, environmental, RF ...) and paid for by businesses. The article's author addresses some of the obvious privacy concerns that arise.