Last month, the U.S. government pledged another $2.5 billion for high speed rail. That money will go toward building train lines between Los Angeles and San Francisco, and Chicago and Detroit--the kind of short trip a business traveler right now takes to the skies for. So what will happen to airlines when trains will get us to a place almost as fast? Listen to the story here.
And you can see the whole Marketplace series on the Future of Transportation here.