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The second type of engine is a four stroke engine (the more common one), which intakes a fuel-air mix, pushes it down on the piston, closes the intake pipe, pushes back up, ignites with the spark plug, goes back down and then pushes it out of the exhaust pipe.

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There are two types of gas engines. The two stroke engine intakes fuel-air mixture and then compresses it into the spark plug, which ignites it, making the piston move back down, and then letting the gas go out of the exhaust pipe. The rotary motion caused by the piston moving around powers the car.

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World Book Online "How electric cars work"

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World Book Online "How electric cars work"

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Electric cars use many sets of batteries to power the car. An electric controller alters how much energy goes to the motor, which turns the wheels. When the driver pushes down to let more energy into the motor through the controller the car goes faster. When the driver uses the the controller to  bring energy back to the batteries, they use a process called regenerative braking, causing the car to brake and slow down at lights.

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Because Gas cars take a few minutes to fill up and gas stations are everywhere, while Electric cars can take hours and it's quite hard to find or get a power station that can power an entire car. Another reason is because people have figured out how to make the best possible gas car, the prices are quite high on electric cars compared to gas cars.

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In theory, we would like every single one of our cars to hydrogen because they take hydrogen, which is close to most renewable power source, and the engines are different from the electric ones which hurt the environment greatly but otherwise are pretty good. Gas cars are the worst possible cars we could have so we should to get rid of them. Hybrids are gas cars that can use regenerative braking (see the second column) to get small amounts of electricity which the cars use to speed up again after coming to a stop.

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Should you buy an electric car? - BBC News

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Gas cars requires lots of gasoline to function and use pistons and other things, like spark plugs, to make the car have movement. Electric cars require batteries and energy inside of said batteries, to function and use an electric engine to convert the electricity into motion. For braking, Gas engine put a lock on the wheels, forcing the car to a stop, while Electric cars bring energy back from the engine, all the way back into the batteries to be used again.