From EcoWorldly: "Carshare programs are growing in North America as well. As with many good things, like… um… poutine , carsharing was introduced to the Americas through Quebec.

Use coupon code "ZIPBOSNOW" to get a $10 credit on your account if you're already a ZipCar car sharing member. If you're not - joining could save you money and reduce your environmental impact.

In the fourth installment in this series from AutoBlogGreen our hero completes the sign up process and is ready to book his first car from car-sharing company AvanCar.

Part-2 of this article from AutoBlogGreen comparing the cost of owning a car and using a car sharing service.