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"Increase temperature."

Temperature control -- another useful voice-activated feature your car can handle.

Gabe Palmer/Getty Images

Getting a bit chilly in the cockpit? Can't remember which button makes the heater blow warmer air? Don't rear end the car in front of you while trying to read those cryptic symbols on the dashboard. Just ask the car to do it for you and let it worry about the details. Many cars will respond to a range of synonyms for this command, such as "temp up" or "warmer" (or, in the opposite situation, "temp down" or "cooler"). Sure, it's a bit like talking to a clever 5-year old; but then again, 5-year old kids can be very useful for doing odd jobs around the car. And your car's voice-recognition system will never ask you, "Are we there yet?"

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