By the mid-1970s Penn Central asked to discontinue the service, citing dwindling ridership and the aging Rail Diesel Cars it used.

[2]: 196 In the summer of 1975, the westbound Friday Michigan Executive operated all the way to Chicago, returning the following Sunday.

[3] Chartered buses carried passengers from Michigan Central Station to downtown Detroit.

Returning commuters took the Chicago-Detroit Twilight Limited which was modified adding stops to accommodate former westbound Executive passengers.

[2]: 197  State transportation officials estimated that the discontinuance would save $200,000/year, and daily ridership had dwindled below 60.