A car with no motor beat the wind – then a physics professor bet $10,000 against it

A physics professor challenged the claim that a wind-powered car with no motor, no batteries and no stored energy could travel downwind faster than the wind itself. The argument turned into a public $10,000 bet, witnessed by names including Neil deGrasse Tyson, Bill Nye and Sean Carroll. The professor argued that gusts, wind gradients or flawed experiments explained the result, but further evidence showed the car could keep accelerating beyond wind speed. After the demonstration and explanation, the professor conceded and paid the bet, turning a strange physics puzzle into a public lesson in evidence and changing one’s mind.