Call your state DOT, the State Patrol chief, your State House representative and your State Senator, along with every print, radio, and TV outlet within their viewing/listening coverage. Present ALL of them with the information, and that nothing has happened other than you nearly losing your life! Especially since the "authorities" so far don't give a rat's [censored] about your situation, it's time to ratchet things up a notch.
Have your attorney get a summons issued against the cops that "investigated", that usually gets someones attention!
And for those of you that still think the cops are out to "protect and serve", this is yet another example of how that is generally BS.