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.