Car sharing networks that allow the vehicle to be returned to any location were found to have the impact of removing seven cars for each rented car in San Diego in a three-year study released July 19.

A new study, "Impacts of car2Go on Vehicle Ownership, Modal Shift, Vehicle Miles Traveled and Greenhouse Gas Emissions: An Analysis of Five North American Cities," by University of California, Berkeley Transportation Sustainability Research Center researchers Elliot Martin and Susan Shaheen, looked at the effects of car sharing in San Diego, Vancouver, Calgary, Seattle, and Washington, D.C.
"The study focused on car sharing offered by car2Go because that company allows people to pick up a car in one place and drop it off elsewhere, unlike some other car share providers that require cars to be picked up and dropped off in the same place," reports David Garrick for The San Diego Union-Tribune. "That allows commuters to use the network to eliminate the 'last mile' problem.”
Sustainability
Car sharing is a key element of the city’s ambitious climate action plan, which aims to cut carbon emissions in half by 2035.
Greater VMT reductions were found in Vancouver, Calgary, Seattle and Washington, D.C.
Increase sustainability by renting electric vehicles?
Car2go made San Diego the only North American city with an all-electric fleet when it launched service here five years ago, increasing the local network’s role in preventing pollution and greenhouse gases.
But company officials decided this spring that an electric model was unsustainable and switched all of their vehicles to gas-powered in May.
Last mile solution?
Interestingly, a post last year about Car2Go's expansion to Queens, N.Y asked, "Last Mile Solution or Congestion Nightmare?"
"Some experts question how efficient Car2go will be at improving outer-borough mobility," reported Matthew Flamm for Crain's New York Business. "Richard Barone, director of transportation programs for the Regional Plan Association, thinks the service could help with the 'last mile' problem often found outside Manhattan, where people can live a long way from the nearest subway stop."
There's no reason to think that the results in New York City would be any different from the other four cities studied.
“Our exhaustive, three-year research effort into one-way carsharing reveals that car2go vehicles result in fewer privately-owned vehicles on the road, fewer vehicle miles traveled and a reduction in greenhouse gas emissions,” said Susan Shaheen, Co-Director of TSRC in a UC Berkeley, Institute of Transportation Studies news release.
Participation from car2go and its members, the largest free-floating one-way carsharing service in North America, gave us unprecedented access and insight into how this kind of innovative mobility service is impacting North American cities.
Look for the results from another study by the Transportation Sustainability Research Center on the sustainability of transportation network (ride hailing) companies like Uber previously announced here.
Car2Go is a division of Daimler, a German multinational automotive corporation perhaps best known for its Mercedes-Benz vehicles.
Hat tip to Metro L.A. Transportation Headlines
FULL STORY: Study: Car-sharing reduces pollution, cars

What ‘The Brutalist’ Teaches Us About Modern Cities
How architecture and urban landscapes reflect the trauma and dysfunction of the post-war experience.

‘Complete Streets’ Webpage Deleted in Federal Purge
Basic resources and information on building bike lanes and sidewalks, formerly housed on the government’s Complete Streets website, are now gone.

The VW Bus is Back — Now as an Electric Minivan
Volkswagen’s ID. Buzz reimagines its iconic Bus as a fully electric minivan, blending retro design with modern technology, a 231-mile range, and practical versatility to offer a stylish yet functional EV for the future.

Healing Through Parks: Altadena’s Path to Recovery After the Eaton Fire
In the wake of the Eaton Fire, Altadena is uniting to restore Loma Alta Park, creating a renewed space for recreation, community gathering, and resilience.

San Diego to Rescind Multi-Unit ADU Rule
The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.

Electric Vehicles for All? Study Finds Disparities in Access and Incentives
A new UCLA study finds that while California has made progress in electric vehicle adoption, disadvantaged communities remain underserved in EV incentives, ownership, and charging access, requiring targeted policy changes to advance equity.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Albany
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research