As fuel prices show no signs of subsiding any time soon, calls are starting to increase for reviving the once dreaded national speed limit. As in the 1970s when the 55mph speed limit was originally implemented, the premise is to reduce fuel consumption. Sen. John Warner (R-VA) has sent a request to Energy Secretary Samuel Bodman to determine what the best speed would be for optimum fuel efficiency with current vehicles. No new speed limit legislation has been introduced yet in Congress but this is clearly a first step in that direction. It seems unlikely that any national speed limit legislation will be passed prior to the elections this November. However, come January 2009, if gas prices still remain above $4/gallon, a lower speed limit seems probable. Thanks to Greg for the tip!