In simple terms, the concept of car rental is sharing economy with peer to peer car rental business. One of the big rental businesses like Airbnb has many unicorns that inspire startups to start their own rental platform in the same or different niche. As a startup, willing to start with a car rental business, all one needs is the car rental script. The term car rental script is a ready made PHP script or an online booking software where the car owners can list their cars for rent and users can book whenever they need.