Have you ever been stuck in traffic behind a really slow moving vehicle? This can be a very frustrating experience, especially when you're running late. In San Diego there is a highway where one exit leads from one highway directly onto another. To make matters worse there is a steep upward hill on the second highway which is used frequently by cement trucks. You can imagine the results as cars leave one highway traveling 55 miles per hour only to find a cement truck slowly making its way up the hill at 20 miles per hour or less.

One day a woman found herself on this highway behind a big yellow-and-red cement truck. The truck was traveling so slowly that she had to watch the tire tread to be sure the truck was actually moving. It seemed to take forever as the truck slowly approached the s…