This is very cool, and a good answer to a brainteaser interview quesion! But sailing? Not in the true sense. A sail is generally understood a fixed wing or othe

This is very cool, and a good answer to a brainteaser interview quesion! But sailing? Not in the true sense. A sail is generally understood a fixed wing or other variant of airfoil (cloth sail, etc). This craft uses a variable pitch geared rotor assembly (as its wind-powered-propulsion system), and will only work with a wheeled vehicle form factor (from the looks of it).