Kinda nifty and humorous at the same time! All that's needed is a siren!
I typically avoid speeding by looking at my speedometer occasionally, knowing the area I am driving (and checking the signs); if I am lucky, I am driving a car with cruise control, so I will just set that at the speed shown on speed limit signs, and not worry about it.
It may not be "cool", but it beats a speeding ticket any day...
