No freaking way. I hate flying so I drive everywhere this would add 1/3 more time to all my trips. Its my gas, if I want to guzzel it at 75-80 so be it. We have much safer cars then we did the last time we tried 55, so traffic deaths won't go down much if any. OMG I would shoot myself if I had to drive 55 through northen Arizona to get home. THERE IS NOTHING THERE BUT STRAIGHT INTERSATE. Bah pox on whomever thinks this is a good idea. My car was not desgined to go that slow.