Senator John Warner (R-VA) has asked the Energy Department to look into a national speed limit, pointing out that the previous national speed limit reduced consumption and prevented deaths. When we wrote our Guide To Speed Limits, we joked that the piece would have been a lot shorter had the National Maximum Speed Law (from the original Malaise Era) not been repealed. This follows a plea to lower Michigan's speed limit as well. Here's the question: Can you drive 55?

Some of you may have already adjusted your driving habits to save dino juice. Some of you may not care. What about a graduated speed limit that would allow more efficient vehicles to travel faster than vehicles that don't perform as well? Is this the evil federal gubment interfering in our bidness? Is this a step in the right direction? Weigh in below.