Whether you live in a city where parking is at a premium, or you need a car when your vehicle is in the shop, you'll appreciate the value of car sharing. Peer-to-peer car sharing lets you pay a fee to borrow a car belonging to another person, and other methods of sharing let you reserve a car, pick it up in your city and drop it off when you're done. What could be easier? With a coupon, you can get a lower price on the car that you need. Check out Giving Assistant for a promo code in your town.