Currently in hybrid vehicles there is a device that converts heat produced by breaking into electric energy (regenerative breaking), why not take that a step further and devise a way to use the "wasted" energy already produced by the turning of the axels.

~Regenerative Driving~

Forgive my lack of scientific terminology and bear with me as i try to explain. I AM "aware" of the laws of thermodynamics (energy can't be created from nothing, bla, bla, bla), but I wouldn't be posting this if I knew 100% of everything I’m trying to explain now would I.

Take a fan for instance, AC power is applied via an outlet which turns a series of magnets and therefore the fan turns and so on and so forth.

What if that principle were reversed, take two metal plate like discs and apply to one side a series of high-poweredmagnets and to the other an alternating series of copper wire arranged like a normal generator would be. These two discs would be housed together (vertically) and both would move freely, mounted on bearings. Take this unit and mount it to the axel of a car so that one disc is attached to a stationary part of the underside of the car and the other is free to move as the axel does. For every revolution of the axel this unit would produce small amounts of energy and possibly recharge the battery of a hybrid vehicle. Multiple units on each car could account for a significant amount of energy that would otherwise be lost wouldn't it?

I understand by adding weight, the resistance of the magnets and the copper to each other, etc. would expend fuel to produce electricity, but i figure the axel is already turning at a significant rate and there is no significant amount of added drag as the units is mounted under the chassis of the car. Imagine hybrid tractor trailers (4-6 axels) and the like.

How feasible would something like this be? Or am I just pipe dreaming? Be kind...it's first time

What do you think of this idea or comment?
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I disagree