Repost from the Daily Green...
Drivers may reduce carbon emissions by stop idolizing:
Every moment you spend idling your car's engine means needlessly wasting gas, as well as rougher wear on your vehicle. Idling for more than 10 seconds wastes more gas than is needed for startup. Overall, Americans idle away 2.9 billion gallons of gas a year, worth around $78.2 billion.
read more.. http://www.thedailygreen.com/going-green/latest/green-tips-10-easiest?click=nav