When I got a hefty speeding ticket about 1000USD before, I followed a stupid friend's idea:
if I go all the way back to the local police station where I got the ticket, the local cop will show sympathy on my effort.
But it was just a waste of time, 8 hour drive again, gas, and the fine. And 3 month suspension of my license.
Sometimes you may see friendly cops, but the camera on the street here has good fuction to keep your face well. Be careful.