In this episode, I talk with Gregg Zuman, founder and principal of NYC-based trike-services company Revolution Rickshaws, about his quest to wean urban logistics off fossil fuels. Like Evan Pritchard of the Center for Algonquin Culture (my guest on episode 9), he's heading back to the future. Listen up to find out why trikes have not yet taken over the world—and how they still might!