Zipcar is similar to a car rental company but with all the fun of a scavenger hunt. Rather than having to go to an actual lot to pick up your car, they have cars sitting on the street all over New York. With the basic customer part done online rather than in a store or on the phone, you simply log on, make a reservation, figure out where your car is and then walk up and get in. Often the rates are a lot cheaper than cabs or car services ($8.50 an hour!) but be sure to check the website for all the rules and regulations as you have to become a member and have a special card for the system to work.