For the time being, team managers will choose to use it depending on the type of circuit and the driver's girth.

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Mr De Tomaso had started out as a racing driver, a star in the circuit of Buenos Aires, where he was born.

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But a rule change, announced on Friday, will allow one day of testing at a non-F1 circuit if the substitute driver has not raced in F1 for two seasons.

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The DCRC greatly decreases standby power in the retention circuit by periodically activating itself to update the size of the buffer of the retention driver.

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"Singapore is a night time circuit, which none of us have experienced before, but we'll be OK, " the English driver added.

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