Zipcar is a membership-based car-sharing company that provides automobile rentals to its members, billable on an hourly or daily basis. Members are able to view vehicle availability and reserve a self-service car via the internet, iPhone app, or telephone, in increments as short as one hour and pay only for time they reserve. Zipcar vehicles report their positions to a control center using in-car technology. Zipcar was founded in 2000 by Cambridge, Massachusetts. On October 31, 2007 Zipcar merged with rival Flexcar. In 2009 Zipcar has become the world's largest car-sharing service, sharing 6,000 vehicles among 275,000 drivers in 49 U.S. cities, Vancouver, Toronto, and London. On April 1, 2010, Zipcar bought London-based car-sharing firm Streetcar in its latest bid to expand across Europe.Something looks off?