Inside China's booming sharing economy

A recent study found that more than 55 million Americans will use a "sharing economy" service at least once this year.

The most popular services in the U.S. are the ride-hailing app Uber and home rental booker Airbnb. But nowhere in the world is the sharing economy more popular than in China.

Last year, 600 million Chinese people used a sharing service. Some are asking if it's too much of a good thing.