https://www.michigan.gov/sos/0,4670,...364---,00.html
Historical vehicles
A historical vehicle must be:
- 26 or more years old
- Owned solely as a collector's item
- Used only for events such as historical club activities, parades, and car shows
Note: A vehicle registered with a historical or authentic plate cannot be used for routine, day-to-day transportation; however, the law does allow for vehicles with a valid historical or authentic license plate to be driven at any time, including as daily transportation, during the month of August.