From what I heard, they would use CSX from Toledo to DTW (which is between the CN and AARR shown on the map above) and then branch to Ann Arbor and Detroit on the Michigan Line used by the Wolverine (hence why the train is termed the "T"). Interesting plan, but not sure how they're going to find funding (particularly with two states involved - though the South Shore Line does manage that...) Figure Michigan would prioritize Ann Arbor-Detroit before this, and Ohio hasn't exactly been known for funding trains...