| 41. | We have cars, not just ideas about internal combustion engines.
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| 42. | Detroit has an enormous stake in the internal combustion engine and the status quo.
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| 43. | However, they are more efficient than most internal combustion engines.
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| 44. | Imagine a global economy no longer dependent on oil and the internal combustion engine.
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| 45. | Internal combustion engines are not strictly required to etch silicon.
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| 46. | Before this hybrid appeared, something quite unexpected happened to the old internal combustion engine.
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| 47. | Hybrids are cars that combine an internal combustion engine and a battery-powered electric motor.
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| 48. | Gas Turbines are among the most efficient internal combustion engines.
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| 49. | Hydrolock in a running internal combustion engine signals instant destruction.
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| 50. | To many a scientific purist and environmentalist, the internal combustion engine is a bust.
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