Does Idling Waste Gas

http://www.GreenDrivingTips.com This is a 14 second clip of my 2007 Honda Civic Idling at a light. It was sped up at a rate of 6-1 to show how idling affects gas mileage. Actual time idling was 60 seconds. According to father of hypermiling Wayne Gerdes, if you are going idle more than 7 seconds it is to your advantage to shut the engine off. Disadvantages might include more wear on the starter and key switch.