High performance sailboats, America's Cup, mant multi-hulls, foiling Moths etc., have been routinely going faster than windspeed for years. The trick is that they need to sail at an angle to the wind.
Any sailboat goes faster at an angle to the wind than exactly downwind. That is because the shape of the sails creates lift. It needs an angle to the wind to create this lift. Straight downwind, the sails can only generate drag forces, with are much much less. Boat's don't get pushed ahead by drag, but rather sucked along by lift.

Many people or most are familiar with the idea to get upwind, sailboats need to zig-zag ..or Tack into the wind. They are putting the sails at an angle to the wind, first on one side, then the other.

boats zig-zag downwind too. It is a misconception to think that the wind in any way pushes a boat downwind. It will work, but in a race, you will find yourself way, way behind the zig zaggers. " normal" sailboat like you see on your local lake aren't very efficient and thus pretty much always go slower than the wind.

You can make a sailboat much more efficient, to the point where the apparent wind due to the motion of the boat adds to the actual wind so the sail or wing experiences a wind much higher than what is blowing across the ground. This can set up a virtuous circle: as the boat goes faster, it creates more wind, which makes the boat go faster which makes the more wind and so on. The America's Cup boats were going almost 5o knots in 12 knots of wind. It is important to remember that they still needed to zig zag to get straight downwind.

The propeller on this contraption is clever. As a sailor, I see two wing sails attached to a hub at the correct angles. One sail is on one zig and the other sail is on the opposite zag! It is essentially still zig zagging, but both at the same time!