Chauffeur as a service in the near future with autonomous fleets.

Through an app request a Tesla to come pick you up, take you where you need to go, then drop you off and serve someone else after. Once you're ready to head back use your app and request a Tesla or your Tesla to come pick you up again. Pay as you go or monthly subscription like ZipCar.

You could potentially own the car, and let it be a revenue source picking up others while you're not using and Tesla manages the fleet and infrastructure. Or you might not own the vehicle at all and it's a Taxi.