The average annual cost of owning a car in Canada is >$16000 CAD. In the US it's even higher at >$12000 USD.

Obviously owning a bike, taking public transit and taxis, and occasionally renting a car isn't free, but if you live in a walkable neighbourhood and can take public transit to work it's easy to keep your monthly transportation expenses under $200. The great part about not needing to own a car is that there's no sunk cost that incentivises you to choose one option over another.