Some sources: https://www.lockhaven.edu/~dsimanek/museum/ddwfttw.htm https://www.lockhaven.edu/~dsimanek/museum/ddwfttw.htm https://en.wikipedia.org/wiki/Blac

Some sources: https://www.lockhaven.edu/~dsimanek/museum/ddwfttw.htm https://www.lockhaven.edu/~dsimanek/museum/ddwfttw.htm https://en.wikipedia.org/wiki/Blackbird_%28land_yacht%29 https://en.wikipedia.org/wiki/Blackbird_%28land_yacht%29 The search term to use is "DDWFTTW" It's a bit confusing, but some important points are: * It only works if you're on land, you can't have a flying device that does this. * Boats can sail faster than the wind speed, but have do so at an angle to the wind. (Just to convince yourself that this isn't completely strange). * The wheels rotation on the ground is what drives the propeller, not the other way around.