I hate to think outside the box, but personally I would think law enforcement would be more concerned about protecting cyclists since it doesn't take very much to kill one, whereas in a car it takes a good whack to do that. So instead of trying to find car speeders go after motorists that do things against cyclists that could endanger them. Just last week a motorist turned right in front of me for which I had to hit the brakes hard, a cop was behind the motorist, I yelled at the motorist which I'm sure the cop heard, the cop just kept going straight. I guess if I had bounced off the car the cop may have looked for about 30 seconds then kept going!