First it was AirBnB and similar websites. They provide a way for people with space available in their home or apartment to connect with those who need a place to stay. The next logical step was renting your car. Recently started Getaround has addressed that.  Their website notes that the average car is driven only 8% of the time. What Getaround provides is a peer-to-peer carsharing.

For a price as little as $6 hour, users can rent cars from neighbors or people nearby by the hour, day or week. The company stresses the environmental impact of the venture. It's also a good way to make some extra money if you have a car that isn't used often.

The company provides insurance and screening of drivers for car owners. For users they have a feedback section. The system works with a kit that's installed in the car that can be operated with a smartphone. 

This is a Getaround Tesla car on their website, it rents for $50 an hour. I'm going to San Francisco right now.