A completed high-speed rail corridor between Chicago and Detroit could boost round-trip passenger train service between the two cities from the current three daily trips to 10 by 2035 at speeds of 110 m.p.h., according to preliminary planning on the project.

http://www.wzzm13.com/story/news/local/kalamazoo/2014/10/29/detroit-to-chicago-rail-plan-110-mph-10-daily-trips/18114073/