why can’t electric cars be charged by their own movement?
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Let’s say they do charge while they drive. Perpetual energy machines are literally physically impossible (Literally violates the laws of physics). You will never get more energy out of something than you put in. There’s a reason why patent offices will basically reject perpetual motion machine patents outright.
So that means at best you will get back the energy you put in. Which means at best you can stop and go again with the energy, but you would never be able to go faster than you started. Which is also impossible because it’s a physical impossibility to 100% efficiently convert the energy in a car (Literally violates the laws of physics). Which means doing this will always result in you slowing to a stop unless you’re on a hill.
Now electric cars do have regenerative breaking. This lets them charge their batteries when they slow down/stop. This works because the electric motor also works as a generator. In fact, nearly all non-solar power plants (and even some solar plants) essentially use the equivalent of giant electric motors to produce power.
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