Kool little challenge...makes the monotonous and slow driving kinda fun making little goals and challenges. I am a gear head at heart and within a couple weeks of owning a vehicle can figure it out by sound and vibration etc. I rarely ever have to look at the tach anymore and can usually judge speed by the way the car feels as well. This "fine tuned" ability can help in your driving...but it can also drive you NUTS. Every little rattle, bump, hangup, grind or wobble that I can feel or hear in the pedals, shifter or wheel thats not "normal" drive me insane LOL. I will hunt and hunt until I cant find anything else it could be then drive my other mechanic buddies nuts askin em what it might be. Its got its pros and cons, but I could possibly see it work with regards to efficiency!!! Keep us updated and dont worry bout the cops, if you find yourself alone, maybe take a peak at the speedo just to make sure and keep it off limits otherwise. In traffic, like said above...just blend in and hang with the pack!
Matt
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