High Quality Content by WIKIPEDIA articles! Peer-to-peer car rental (also known as person-to-person car rental and peer-to-peer car sharing) is the process whereby an existing car owner makes their vehicle available for use to other drivers in their area in exchange for payment. The term is seen as a natural extension of the person-to-person lending model (also known as peer-to-peer lending and social lending) and a further move towards collaborative consumption, which has become popular with the rise of social media.