Pull over and turn your car off immediately to prevent overheat damage. If you can’t pull over, turn your dash heater to full hot and turn the blower to full. This should cool your engine down by a good amount.
Trick Credit: http://www.reddit.com/r/lifehacks/comments/1x4vbz/if_your_car_over_heats_pull_over_and_turn_the_car/
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