It is a vicious design circle just like in airplanes. When a plane gets heavier you need a more powerful engine to lift it off the ground and the
engine is therefore bigger and heavier. Then you have to go back and increase the strength of the plane to handle the extra weight and power
of the engine. Well now you need a bigger engine again to handle the extra weight of the plane etc etc etc.
Remember Lotus Sports cars ? They had 4 cyl cars that could beat American V8 cars because their cars were only half the weight.
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