https://www.cnet.com/roadshow/news/maven-peer-to-peer-car-sharing/

Maven announced today that it has launched a pilot program that will allow GM owners to add their vehicles to Maven's fleet in exchange for cold, hard cash. Currently in beta, the peer-to-peer sharing system is limited to the Chicago, Detroit and Ann Arbor markets until it's ready to expand in the fall.

It's not just you, fumbling through the process of getting your car listed -- Maven will offer professional help to speed everything along.