Mich. Comp. Laws § 500.130: Peer-to-peer car sharing program; shared vehicle; insured interest.

Sec. 130.

(1) A peer-to-peer car sharing program has an insurable interest in a shared vehicle during the car sharing period.

(2) A peer-to-peer car sharing program may own and maintain as the named insured 1 or more policies of automobile insurance that provide coverage for any of the following:

(a) Liabilities assumed by the peer-to-peer car sharing program under a car sharing program agreement.

(b) Any liability of the shared vehicle owner.

(c) Damage or loss to the shared vehicle.

(d) Any liability of the shared vehicle driver.

(3) A peer-to-peer car sharing program shall not do any of the following:

(a) Unless authorized, offer or sell insurance, except travel or auto-related insurance offered or sold in connection with and incidental to the sharing of a motor vehicle under a car sharing program agreement.

(b) Make a car sharing program agreement contingent on the shared vehicle driver purchasing residual third-party liability insurance through the peer-to-peer car sharing program.

(4) As used in this section, "car sharing period", "car sharing program agreement", "peer-to-peer car sharing program", "shared vehicle", "shared vehicle driver", and "shared vehicle owner" mean those terms as defined in section 3 of the peer-to-peer car sharing program act.