Consuming alcohol while in a motor vehicle is illegal in Michigan, whether the driver or passenger is drinking. Any container of alcohol in a vehicle should not be uncapped, open, or have a broken seal. This applies not only to roadways and interstates, but parking lots or any area that the public has access to.
Michigan Open Container Laws Michigan's open container laws prohibit the transportation and possession of open alcoholic beverages. This includes open or uncapped containers as well as containers with a broken seal.