The document summarizes the Tern Verge S8i folding bicycle. It describes how the author folds up the bike in Brooklyn and takes it on the subway. It then discusses how folding bike commuting has increased 60% in U.S. cities in the last decade. The Tern Verge S8i takes 10 seconds to fold up small enough to fit under a desk and can be brought on airplanes. Key features include a lightweight but durable design, an internal gear hub for quiet shifting between 8 gears, and hydraulic disc brakes for stopping power.