answer:I have not but a friend of mine put his car on RelayRides. It rented only about once a month, but he’s in the suburbs. Probably in the city it would get more use. It worked out fine but it was to infrequent to be worthwhile. He also used AirBnB to rent a place for a month on a business trip, instead of a hotel. He was in a townhome with a yard, so he could take his dog along. The owner was away on business, He says he definitely would do it again.