As reported in the last issue of Membrane Technology, the Fuel Cell Seminar – held in San Antonio, Texas in early November – provided California-based PolyFuel Inc with an opportunity to demonstrate the capabilities of its direct methanol fuel cell membranes. Here we provide details of a contest that was run in real time by the company, to compare its hydrocarbon-based fuel-cell materials with DuPont's widely used, fluorocarbon-based Nafion 117 membranes.