The last Amtrak train to use Michigan Central was #353, the midday departure to Chicago, on January 5, 1988. F40PH 270 did the honors that day, hauling a train comprised of an Amcafe, two Amcoaches and a couple of ex-Santa Fe heritage coaches. Later that same day Amtrak started using a trailer on the site of the old Michigan Central coach yard as its Detroit station, a situation that lasted until 1994 when a new station opened on Woodward near the Fisher Building, along the Grand Trunk right-of-way; Amtrak service was extended up to Pontiac on the GTW at the same time.
If Michigan Central had an Amtrak heyday, it would have been in the second half of the 1970s. Between 1974 and January 1979 there was direct service to New York across Ontario on the Canada Southern, along with three daily departures to Chicago and the "Michigan Executive" between Detroit and Jackson, a 403b operation that was ultimately cut back to Ann Arbor and finally discontinued in 1984. In the summer of 1980 my dad took me on an Ann Arbor-Detroit round trip, and the "Michigan Executive" that night featured brand-new Superliner coaches- likely the most luxurious local passenger train ever to operate in Michigan. The train shed had been removed over two tracks in 1979 to allow for the operation of ex-C&NW bi-level equipment on the Executive- something that never transpired.
The office tower at Michigan Central was used by its builder, the Michigan Central Railroad, as well as successors New York Central, Penn Central and Conrail. Conrail moved out in the mid-1980's, sealing the building's fate.
MCS opened in 1913 before it was even finished, the result of a fire at the original MC Station down along the Detroit River, not far from Fort Street Union; the top floor of the office tower was never even plastered. MC's waiting room is probably the grandest public space in Detroit, but the building is absolutely gutted- a far cry from the place where Henry Ford once greeted Thomas Edison and Herbert Hoover when they visited the Motor City.