This is not anything new, but there are a lot of fascinating little factoids in the Census' 2002 Fast Facts for Pennsylvania
including: Sport utility vehicles (SUVs) registered in Pennsylvania increased 40 percent between 1997 and 2002.
Pennsylvania has one SUV for every 9 licensed drivers.
A longer profile of transportation data the state is produced by the Bureau of Transportation Statistics. From this you can learn:
Total number of highway bridges in Pennsylvania: 22,092
Total that are structurally deficient: 5,418
Total number that are functionally obsolete: 4,022
Total functionally obsolete or structurally deficient: 9,440 (42.7% which is higher than all but Rhode Island, Massachusetts, Hawaii and the District of Columbia.. but all 4 together have a total of 7,049 bridges, so less than a third of PA.)
Total miles of track in the Philadelphia area rail-transit systems: 1,151.5
in Pittsburgh: 44.5