NASCAR wins though. They still have numerous (5?) nuts per wheel, and they can change them almost as fast.
half a car at a time, 5 nuts per wheel.
12 seconds.
they take off 5 nuts in like a second, incredible speed, they are onto the next nut before the first if off the screw.
watch this http://www.youtube.com/watch?v=nQQbEfr9irE&feature=related
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