This is pretty much what self-driving cars are going to do over the next 2 decades. Tie it in with blockchain micropay and very few people need a car. Most apartment buildings for example will collectively own a few for tenants and those who do want to own a car, can rent it out when not in use. Cars are silly, we pay for them 24 hours a day, use them a fraction of that.
Right?! Mine is mostly used as a taxi and if I didn't hate driving so much I'd probably use it a hell of a lot more than I do. J's car is literally little more than work commute. He drives it to work and back, does the shopping on the weekend and maybe it will get drives around outside of that sometimes, otherwise it spends most of its time parked. But we have to keep it (and all the associated costs of refuelling, servicing, licensing etc) because there isn't public transport to his work >_<