K, wheels off the ground, on a dyno doesnt matter. And show me the proof that an electronic GPS is more inaccurate than a mechanical speedometer.... Believe me, the GPS is most of the most accurate tools today.
Am I the only one that doesn't think that going down a road that isn't preordaned for racing (AkA a road with OTHER CARS and BENDS and IMPERFECTIONS IN THE PAVEMENT ect...) at such high speeds is a very good idea?? Maybe I'm just paranoid but I kind of like my head still attached to my body and my major arterys in tact and such... *Shrugs*