Startup Idea: Car Sharing App for Spare Cars

Startup idea to develop an app or computer program that allows homeowners to share their spare cars with neighbors and earn extra cash. User-friendly and efficient coordination of availability and usage times should be a key feature.

I am a homemaker. Now my teenagers got their driver's licenses. But because they are leaving for colleges in a year, we don't want to buy another car. But without an extra car, it can be very inconvenient at times. It will be great if some app or computer program can help with nearby people to share their spare cars. This way, we don't have to own an extra car and those people with an idle car at that time can earn some extra cash.