Electric Cars are not ready to replace gas-powered cars.
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On the plus side you can get regenerative braking which might give you a net gain for a stop and go all day vehicle.
Regenerative braking has also been done with flywheels and hydraulics.
That's not how physics works. If your driving the car in motion 50% of the time and regenerative breaking is 50% of the time but the power you get back is less than the cost of putting the car in motion because you don't gain energy in a transfer, only loss occurs. This is because of material inefficiency. Gold wires would get you closer (not exactly 1:1) but then no one could afford to buy it. you are in energy debt and analogous to any democrat run administration.
The Laws of Thermodynamics are finite - and MUST be obeyed!
Here is a regenerative braking bicycle using a flywheel.
https://www.wired.com/2011/08/regenerative-flywheel-powered-bicycle/
The design I saw years ago (1970s) used high pressure air over hydraulic reservoirs and variable displacement pumps and motors. They were getting 40 mpg on a VW sized car. It had good acceleration with regenerative braking. They used a 20 hp gas motor but had about 100 hp impulse air/hydraulic power.