https://techcrunch.com/2018/11/12/gm-is-going-to-allow-ford-vehicles-and-other-competitors-on-its-maven-car-sharing-platform/

GM’s car-sharing subsidiary Maven is undergoing another expansion. This time, it’s not just to a new city.

Maven plans to open up its new peer-to-peer car rental service to allow owners to rent out non-GM vehicles.