I've been a zip car user for two years now and it is a great way to get a car in a convenient location for a flat fee. If I just need a car for a few hours I walk book online to reserve the car, walk 10 minutes downtown or take the bus, pick up the car, drive and drop the car off when my time is up. Gas, insurance, it's all covered and my time driving the zip car also counts as a driver for insurance if I should ever decide to own my own.
I was also able to add visitors to town on my account so they could drive if they needed to. Visitor from Switzerland in town need to drive for only a few days, no problem with zip.
Looks like I can drive a zip car where-ever they are located so that next trip to Chicago or Toronto, no problem, they have even added London, England to the list. I recommend this company to anyone as a zero Waste alternative to car ownership that has zipcar in their area.