The word is quite literal. It's a car that is zipped. It just doesn't move. You use an app or website to rent it and drive it around. BUT... when it's time to pick up the car,
that's right... it's zipped! The app stops working. You will be unable to unlock the car with the app. Then you wait for a few more days, for your refund, and a shiny new physical "ZipCard". You can use this card to unlock your Zipcar because the app can't unlock it, remember? Now... when you do manage to unlock this zipcar with your zipcard, the car is smelly, dirty, low on gas, and guess what... with a
dead battery. Now you can't drive it, with a card, app or any kind of magic. Tomorrow you try again with another car, without a
dead battery, and guess what? This time the "Zipcard" stops working. So such a car is a Zipcar. It just stays zipped. You can only look at it, touch it, admire it and curse it. It will zip you up to parking lots.