"The effect on congestion, parking and emissions can be spectacular. CommunAuto, Montreal’s car-share service — the first one in North America — reckons that 250 cars in its fleet take 3,500 cars off the road.According to the Wikipedia page on the phenomenon, there are more than six hundred cities globally that have some form of car-sharing program, including Ottawa's Vrtucar program. According to Vrtucar's official website, "You have 24-hour access to a fleet of cars stationed conveniently in Ottawa neighbourhoods." There are several different pricing plans for people with different needs, so check out the website if you've got any interest.
"In fact, car-sharing has become so mainstream that green property developers in cities like Ottawa are including car-share memberships in the amenities of their condos, and providing space for car-share vehicles to park right inside the building. Some foresee a day when the developer’s obligation to provide parking will be sharply reduced for buildings that incorporate car-sharing in their design."
And if you're a reader from outside the Ottawa area, or you're travelling somewhere else, you can see a listing of cities with available car-sharing programs at CarSharing.net. For many people, the arrangement would be both cheaper than owning a car, less difficult, and better for the environment. And it offers another possibility for transportation, especially as the city's transit strike continues to drag on.