There probably would be a market for a high speed rail train b/t Chicago & St. Louis. I know there are several flights from Midway every day. Heck, there are 4 trains a day between here (in Champaign) & Chicago (2 in the a.m., 2 in the p.m.). So I think a 'bullet' train that would avoid the airport/traffic there would probably be popular & I think the hope would be for a better price than flying.