I found an interesting commentary on MSN. It makes a good point. High fuel prices would accelerate the move toward fuel-efficient vehicles. If the price of fuel drops down again we may never get the iQ in the US. Maybe we should hope the prices stays high. Here is a link to the commentary.
"A variable tax on gasoline would accomplish another important objective: Knowing for certain that gas prices would never drop back to $2 a gallon, consumers and manufacturers would rapidly accelerate the shift to more-fuel-efficient vehicles. This would reduce long-term gasoline-demand expectations and could lead to lower short-term energy prices for the struggling energy-sensitive sectors of the U.S. economy."