Last Friday I had the opportunity to use the Wash DC metro system to get from Andrews AFB to BWI. About a two hour trip, don't know how long in a car but the last leg was on a bus which went along the Baltimore-Washington parkway I think it was called. We were going away from the city and the traffic going into the city was at a virtual standstill, about 0830. The striking thing was that the vast majority, probably 90%, of the cars had one person in them. Why would you subject yourself to that? There is an excellent mass transit system, or you could carpool. If everyone went with one other person, traffic would be cut in half. Are we that selfish?
The worst part was that I had just come back from Italy where bicycles are a major form of transportation. I won't get into the size of the cars, but most of the ones sitting in traffic in Maryland were huge.