TreeHugger encourages car pools; you get social, save fuel and cut back on greenhouse gases all at once. They were part of the war effort in World War II when fuel saving was critical.
Now its importance has hit home again; in his Fourth of July speech at Martinsburg, W.Va, President Bush discussed the "many ways" Americans can "say thanks to the men and women who wear the uniform and their families":
You can send a care package. You can reach out to a military family in your neighborhood with a mom or dad on the front lines; you can ask somebody, "What can I do to help you? What do you need?" You can car pool. You can be on bended knee and pray for a soldier and their families.