They're both peer-to-peer car-sharing services, because the two things that really work for car-sharing is, one, the car has to be available, and two, it's within one or two blocks of where you stand.
Entrambi con i servizi peer-to-peer e car sharing perché per far funzionare le due cose insieme, prima, la macchina deve essere disponibile, e poi, deve essere vicino a dove ti trovi.