Lets underestimate, and say there are 50 million cars in America. Now, again, lets underestimate and say that the average car holds 10 gallons a day, and is filled up once a week. Oil prices drop 30 cents, that's $150,000,000 dollars America saves in a week. $150,000,000/week is enough for me to fuck up our "delicate balance with nature" up in some remote region of the Arctic. It has to be done sensibly, but if you're saving us that much money in a week, go for it.