We have always known that a strong economic indicator was the amount of freight we hauled and warehoused. When the economy was good, trucks would be full and warehouses would be empty. When it wasn't, warehouses would be full and we drove around empty. Maybe I missed something here, but I personally don't think the economy is all that stellar. Anyway here is the Dow's transport report.
http://www.forbes.com/2006/05/04/dow-transport-average-record-cx_rm_0504transports.html?partner=msn
http://www.forbes.com/2006/05/04/dow-transport-average-record-cx_rm_0504transports.html?partner=msn