How Do Hybrid cars work and how do hybrid cars help advance technology?

Answer 1

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Hybrid cars are called that because they are a combination of electric and internal combustion. The internal combustion charges the batteries and the batteries run the car. Mostly they use regenerative braking to store energy for starting also. Any time an industry designs machines which haven't been used (in the new form) previously, something is learned, and that advances technology. But specifically, the advent and sale of hybrid cars give impetus (and funding) to new research in the areas of energy storage (batteries, supercapacitors) and generation (fuel cells).