Amtrak doesn't own the tracks but aren't they capable of 110 mph at least partway between CHI and STL too?
Clearly the long term solution for the future of rail transport should be building new rail. It's clear Acela (soon to be Avelia Liberty) works. If we expanded on that, we'd be able to build on its success. If Congress had "enough money", they could build tracks connecting their Michigan line to Union Station (South of the Lake project?) and tracks connecting the Michigan line to Amtrak's Keystone line in Harrisburg. Then you can have a 110 mph "Broadway Limited" via Detroit and can run as many trains as you have the equipment and labor for and at the times you want for without NS/CSX telling you that you can't. Cleveland and Toledo can have service outside the graveyard shift. According to All Aboard Ohio (
http://freepdfhosting.com/cf26514bc8.pdf" onclick="window.open(this.href);return false;), Harrisburg-Pittsburgh is 104 train miles and Pittsburgh-Dearborn, MI is 303 train miles. So you have to consider the cost for about 407 miles of new track plus the remaining miles of track from the Michigan line to Union Station to get "high speed" service between New York and Chicago. I would suggest the next step would be south in stages, in order: 1) Richmond, 2) Raleigh, 3) Charlotte, 4) Atlanta, 5) Jacksonville and/or Orlando, 6/Miami. Then you've connected the Northeast with both Chicago and Florida, 7 of the 10 largest metropolitan areas (New York, Chicago, Washington, Philadelphia, Boston, Atlanta, and Miami), along with Baltimore, Cleveland, Detroit, Richmond, Raleigh, Charlotte, and Orlando along with 8 of the top 10 states (Florida, New York, Illinois, Pennsylvania, Ohio, Georgia, North Carolina, Michigan, only California and Texas are missing).