As Koop says market pressures will address much of this issue.

As the price of oil increases the relative value of hybrid vehicles, alternative fuel research, improved oil extraction techniques will increase proportionately. While we see improvements in these areas today they are small because right now oil is cheap enough that they haven't achieved "critical mass."

I'm honestly not very concerned. I'll enjoy watching the owner's of Expeditions and H2's pay $100 at the tanks. The SUV craze IMO is getting out of hand. An H2 to bring the kids to soccer practice is ridiculous.