Terrible service. Booked a car for entire Sunday. Showed up in the morning and the car was not there. After being on hold for about 30 minutes in the hot parking lot, the Zipcar agent told me that "she does not know where my car is" and all she can offer is a refund (which I still have not received) and driving credit. This is NOT the first time it happens. Zipcar is unreliable and they ruined my day's plans. Canceling this week.