Peer-to-Peer car hire for your holi- days in Spain Cheap car hire for social travellers. How Does it work? It couldn't be easier: If you are looking for a car in Spain, use our search engine to find the car which better meets your needs. The easiest and... most economic way! If you are an owner, simply register your car and specify a price per day. Other users will contact you when they wish to hire your car.