Mich. Comp. Laws § 339.1867

Sec. 1867. (1) A registrant that transports a dead human body in an authorized vehicle must do both of the following: (a) Conceal the body from public view. (b) Place the body face up in a body bag or rigid container to withstand transportation and prevent bodily fluids from leaking and odors from escaping. (2) A registrant shall maintain the authorized vehicle and equipment used to transport a dead human body in a clean and sanitary manner. (3) If an authorized vehicle can hold more than 1 dead human body, the dead human bodies must be placed face up in separate body bags or containers and secured with space between the bodies to prevent the contact of a dead human body with another.