Car Drawing Vehicle

how do we draw the engine of an electric car? how does the engine work?
i have to combine a car, boat and a plane that is environmentally friendly and i have to draw the engine and I’m thinking about an electrically powered vehicle, i just cant find a simple engine to draw and understand.
If a car, boat, and plane could be easily combined into a usable, environmentaly-freindly vehicle, it would have already been drawn by some of the thousands of engineers that have populated this world.
Advancements in materials have made it easier, but still not worthwile.
The closest thing to combining all 3 is hovercraft, or a gyrocopter with pontoons and wheels.
Anything air-planish would need detatchable wings. People have enough problems trying to store their pickup-caps or Jeep hard-tops.
Your biggest problem is going to be controling the weight. Anyone can make a sturdy vehicle if they throw two tons of steel in there. Making something light and strong requires advanced knowledge of physics,materials, and structure.
The batteries for an electric vehicle make up an extraordinary portion of the weight. Lithium-ion batteries are very light, but tend to be unstable in larger sizes. Ask anyone who’s had a lap-top melt down on them.
That being said, the motor itself is simple. An electric motor pretty much looks the same, regardless of its size. Bust open an old toy and look at the electric motor. Some are as big as houses, some are as small as a Tic-Tac, but they are pretty much the same thing.
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