Laura Bliss:

my Prius when I moved to Washington, D.C.—I expected the city’s Metro system to be a reliable alternative. (It isn’t, but that’s another story.) Luckily, my feet, my bike, and several ride-hailing and car-sharing apps such as Zipcar and Turo have gotten me where I’ve needed to go.
 These so-called “shared-mobility” alternatives have exploded over the past decade, and some of them are making a dent in urban car ownership. In a report published Tuesday, new research by UC Berkeley’s Transportation Sustainability Research Center quantifies the effects of car2go—a one-way car-sharing service powered by German automaker Daimler AG—in select North American cities. The report, co-sponsored by the U.S. Department of Transportation and car2go, among other funders, found that the service creates a net reduction on the number of vehicles on the road, which in turn seems to be reducing the number of vehicle-miles traveled and greenhouse-gas emissions.