Unidentified Policeman: Can you turn off the engine and roll down all your windows, please?

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The first thing to notice inside is the pleasant chime that sounds whenever you enter the car or turn off the engine.

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Many of these gadgets can be used to turn off a check engine light, which can be a money-saver if you avoid a trip to the garage simply because the gas cap was loose, a common cause of check engine alerts.

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