As everyone knows, the country is going to undergo some significant "graying" over the next few decades with the proportion of senior citizens going up substantial. That's going to pose a challenge on many levels, but one level is that
building more and better transit will help us cope with the problem that seniors often aren't comfortable driving, especially in sub-optimal conditions, and it often isn't safe to have them on the road. If we don't want to see a huge proportion of the population immobilized, we're going to need more ways for people to get around.
This article available online at:
http://www.theatlantic.com/politics/archive/2008/06/transit-transit-everywhere/48936/