I don't know if it's possible, but there needs to be a dedicated passenger line in the Chicago area and Detroit area. It appears that the freight traffic is the main culprit to dismal on time service. They are already working on track improvements for higher speeds, but it realls doesn't matter if the train can go 500mph if it's stuck behind a mile long freight train chugging along.

Also as someone in the article stated, why not add a stop at Detroit Metro? Seems logical to interconnect it to the proposed line.