New York Times article; low loadings sound a bit worrisome (what's quoted sounds like barely enough to cover Amtrak haulage fees), but that might also be due to season and day of the week (a Monday in late winter):

http://www.nytimes.com/2014/05/18/trave ... .html?_r=0

Of particular note are the reader comments, all but one positive--and the one negative one is by a guy who just comes out and says he doesn't like trains.