John Devine's comments are indicative of the kind of thinking that has gotten us into the fuel demand mess we are in currently. What Mr Devine does not acknowledge is that traffic lights and MPH restrictions are designed to restrict and regulate the movement of traffic for the purpose of avoiding gridlock--such as that experienced on the strip--and not to maximize fuel savings. So, in order to "make the light" one must ignore the posted speed limits, and in the process waist fuel through unnecessary down-shifting, not to mention reckless maneuvering. I defer to the experience of Dr. Pravica, over that of laymen, when it comes to matters of science, and I recommend that we all lend an discerning ear to scientific advice. As for Mr. Devine, I would just like to personally 'thank' him for driving up demand.