Why the rise of the electric scooter has been a bumpy ride

Summary

It began with just 10 electric scooters in Santa Monica, California, but soon sidewalks and streets were flooded with thousands of them. Essentially skateboards with handles that can be picked up and dropped off anywhere, they've been rolled out in scores of U.S. cities, where local officials have struggled to cope and residents have mixed feelings. Special correspondent Catherine Rampell reports.