Global cities are growing by 65 million people a year. While this rapid growth is advantageous in many ways – metropolitan areas generate 80 percent of the world’s GDP – urbanization also leads to many challenges. For one thing, more people means more vehicles clogging up the roads. See how Dakar’s new toll road is helping the growing city slash commute times, curb pollution, and boost business.[fb_vid id=”2284281728264237″]