Prior posts have noted the proposed fuel efficiency standard, and have also noted that current technology would likely permit even higher per mile standards because of the as-yet untapped potential of current automotive power systems. As noted, pursuant to the Energy Independence and Security Act (enacted December 2007), automakers were required to improve fuel efficiency 40% by 2020 (which equates to 35 miles per gallon on average); currently, automakers have to achieve 27.5 miles per gallon on cars and 22.2 miles per gallon for light trucks. [For an explanation of how the CAFE standards are calculated, see http://en.wikipedia.org/wiki/Corporate_Average_Fuel_Economy.] Yesterday, the U.S. Department of Transportation announced that they would not have a final rule issued by January 20, 2009. See http://www.autonews.com/article/20090107/ANA02/901079961/-1. As such, addressing the proposed new CAFE standards will be left for the Obama Administration.