The latest solution for congested cities is an electric, autonomous tricycle for adults. The challenge of moving people and things around the world’s dense, growing major cities is bad and getting worse. Ninety percent of the world’s population growth in this century will be in “megacities,” and cities will soon account for 80 percent of global carbon emissions, according to the United Nations Environment Program. Much of that will come from idling cars stuck in miles-long traffic jams. Ryan Chin, a research scientist at the MIT Media Lab, specializes in dreaming up solutions to urban transportation problems. His latest invention, unveiled at the EmTech conference earlier this week in Cambridge, Massachusetts, tries to marry the three dominant trends in urban automobiles: autonomy, vehicle sharing, and electrification. But it’s not a car; it’s a three-wheeled EV that Chin has dubbed the “persuasive electric vehicle,” or PEV. With a carbon fiber […]