Car-sharing is shifting into a higher gear as people try to save on vehicle maintenance costs and reduce their carbon footprint.

Some people who have joined car-sharing plans have sold their cars.

"I used to only use my car on weekends, and increasingly thought that was a waste," a 35-year-old Tokyo woman said. "After discovering that the condominium complex where I moved has a car-sharing service, I decided to get rid of my car."