The government continues to mandate a minimum MPG per class of vehicle, and it's going to continue to get harder to hit the mark. So we'll never see the 15mpg gas guzzler again. Regardless of gas prices, the reason for this is to reduce CO2 emissions. Climate change is the name of the game we're playing now. OPEC has backed off prices because it has to make future domestic drilling less appealing to American consumers, and less financially appealing to American companies. If it stays low, the population will stop screaming for relief which is what prompted American companies to find domestic sources. Between the US and Canada, there enough untapped sourses that we could tell Opec to shove it where the sun don't shine. But with the prices low, it's not worth the cost of exploring. http://usatoday30.usatoday.com/money/autos/story/2012-08-29/fuel-standards/57383050/1