It's impossible not to grin as you tap the gas pedal and feel the kind of thrust normally reserved for astronauts and test pilots.

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She is put through a mini-bullfight complete with a matador, picadores (lancers on horseback) and banderilleros (who thrust barbed darts into the animal) to test her speed, strength and instinct to charge.

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When ignited in a test pit the rocket, called the B4, produced a thrust of about a quarter of a tonne and behaved exactly as predicted.

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