At last check only two Amtrak trains per direction serve Kansas City. The lone Amtrak route serving Detroit does have six daily trains total [[three per direction), so it could make sense in the long run, especially with those recent plans for a long-distance service running New York-Michigan-Chicago, almost always either an extension of the Pennsylvanian west of Pittsburgh or a reroute of the Lake Shore Limited so that it turns north in Toledo to serve Michigan.
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