this post was submitted on 24 Aug 2024
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How is that clean energy, in any sense of the word? Any system that gains some energy from a passing car must necessarily decrease the (kinetic) energy of the car by an equal or greater amount. And the vast majority of cars get their kinetic energy by burning fossil fuels. Sounds like a more expensive, less direct, and less efficient version of a gasoline generator.
How would a turbine that takes energy from the air current generated by a passing car decrease the energy of the car? The car has imparted the energy to the air, the air has already extracted energy from the car aerodynamic or directly Newtonian forces, and then the turbine would extract energy from the accelerated air from the passing vehicles.
Not sure where you got that idea from, but how would that generate a meaningful amount of energy? It seems very unlikely that such a system would ever recover the energy spent on its construction.
I think it’s because you said, “Any system that gains some energy from a passing car,” not that anyone mentioned turbines explicitly.