What if planes couldn't land? Or trucks couldn't transport food? Without rubber, the economy as we know it ceases to exist. Kal Penn traces the path of rubber and uncovers a blind spot in the free market economy that's putting us at risk.

Cast: Kal Penn, Tone Bell, Dr. Chukiet, Adam Davidson, Bill Easterly, Harry Evans, Bo Jay, Brianna Mahon, Robert Meyer, Bobby Moynihan, Carla Recker, Meghan Trainor, Lesley Wolff, Dar Wong