Hmm sold out long distance trains almost everyday....and to think people actually want to cut this service. Its like telling an airline to cut their highest load factor routes.
But yes, it seems like whenever I check same day ticket prices, something is sold out, weather it be the sleepers or the Portland bound coaches of the Empire Builder. I think if Amtrak added another frequency on certain routes, even more passengers would ride. But of course without funding, lack of equipment, and congestion, that can't exactly happen....yet.
I like to be optimistic
Chris