Number of car-sharing locations: 249
Top neighborhoods: Brighton, Back Bay and South Boston
It's tough to explain how tough it is to park in Boston until you've spent a winter there. That sweet spot you had two blocks down by the packy in August will be under a giant mound of graying snow or occupied by a surly neighbor's lawn furniture come the first nor'easter. We humbly suggest not moving that chaise longue, lest you know a shop that will both repair your back window and get that yellow snow stain out of your back seat. Instead, maybe look into a car-sharing service (such as Zipcar, which was born just over the Charles River in Cambridge) and its sweetest amenity: a guaranteed parking spot. In a neighborhood such as the Back Bay, where parking spots sell for the price of condos, it's a steal.