There's nothing that angers scofflaws any faster than those who obey the law. Any attempt to enforce the law is met with cries of outrage usually based around how any enforcement action is based solely on revenue concerns.
The only road rage I ever see is on the part of not the one who's safety or personal space has been invaded, but rather by those who did the invading and then get outraged when the invaded has the gall to call them on it.
I’m afraid habitual speeders often have the maturity level of a two year old when it comes to their desire to want to drive as fast as they want. Many probably did not get enough discipline when young in order to instill a respect for the law and the ingrained manners which give rise to a natural respect for the other guy.