Talking Cars

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Sleepy drivers contribute a lot to road accidents. This is why Nissan Motors, the carmaker, developed a system to solve the problem of drivers getting drowsy behind the wheel. A small video camera monitors the driver's face and a computer checks the length and frequency of eye blinks which, indicates alertness. Too many long blinks will trigger an electronic bleep, while a pre-recorded voice requests the sleepy one, "Please take a rest." If the blinking goes on, a puff of deodorizer is released to jolt the driver out of dreamland.